The new robot eliminates the need for humans to enter dangerous and toxic environments. Photo courtesy of Square Robot

Houston- and Boston-based Square Robot Inc.'s newest tank inspection robot is commercially available and certified to operate at extreme temperatures.

The new robot, known as the SR-3HT, can operate from 14°F to 131°F, representing a broader temperature range than previous models in the company's portfolio. According to the company, its previous temperature range reached 32°F to 104°F.

The new robot has received the NEC/CEC Class I Division 2 (C1D2) certification from FM Approvals, allowing it to operate safely in hazardous locations and to perform on-stream inspections of aboveground storage tanks containing products stored at elevated temperatures.

“Our engineering team developed the SR-3HT in response to significant client demand in both the U.S. and international markets. We frequently encounter higher temperatures due to both elevated process temperatures and high ambient temperatures, especially in the hotter regions of the world, such as the Middle East," David Lamont, CEO of Square Robot, said in a news release. "The SR-3HT employs both active and passive cooling technology, greatly expanding our operating envelope. A great job done (again) by our engineers delivering world-leading technology in record time.”

The company's SR-3 submersible robot and Side Launcher received certifications earlier this year. They became commercially available in 2023, after completing initial milestone testing in partnership with ExxonMobil, according to Square Robot.

The company closed a $13 million series B round in December, which it said it would put toward international expansion in Europe and the Middle East.

Square Robot launched its Houston office in 2019. Its autonomous, submersible robots are used for storage tank inspections and eliminate the need for humans to enter dangerous and toxic environments.

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This article originally appeared on EnergyCapitalHTX.com.

Zach Ellis, founder and general partner of South Loop Ventures. Photo via LinkedIn

3 Houston innovators who made headlines in May 2025

Innovators to Know

Editor's note: Houston innovators are making waves this month with revolutionary VC funding, big steps towards humanoid robotics, and software that is impacting the agriculture sector. Here are three Houston innovators to know right now.

Zach Ellis, founder and partner of South Loop Ventures

Zach Ellis. Photo via LinkedIn

Zach Ellis Jr., founder and general partner of South Loop Ventures, says the firm wants to address the "billion-dollar blind spot" of inequitable distribution of venture capital to underrepresented founders of color. The Houston-based firm recently closed its debut fund for more than $21 million. Learn more.

Ty Audronis, CEO and founder of Tempest Droneworx

Ty Audronis, CEO and founder of Tempest Droneworx

Ty Audronis, center. Photo via LinkedIn.

Ty Audronis and his company, Tempest Droneworx, made a splash at SXSW Interactive 2025, winning the Best Speed Pitch award at the annual festival. The company is known for it flagship product, Harbinger, a software solution that agnostically gathers data at virtually any scale and presents that data in easy-to-understand visualizations using a video game engine. Audronis says his company won based on its merits and the impact it’s making and will make on the world, beginning with agriculture. Learn more.

Nicolaus Radford, CEO of Persona AI

Nicolaus Radford, founder and CEO of Nauticus RoboticsNicolaus Radford. Image via LinkedIn

Houston-based Persona AI and CEO Nicolaus Radford continue to make steps toward deploying a rugged humanoid robot, and with that comes the expansion of its operations at Houston's Ion. Radford and company will establish a state-of-the-art development center in the prominent corner suite on the first floor of the building, with the expansion slated to begin in June. “We chose the Ion because it’s more than just a building — it’s a thriving innovation ecosystem,” Radford says. Learn more.

Texas saw a 440 percent jump in business investments between 2019 and 2024, according to a new report. Photo via Getty Images

Texas tops ranking of best states for investors in new report

by the numbers

Texas ranks third on a new list of the best states for investors and startups.

Investment platform BrokerChooser weighed five factors to come up with its ranking:

  • 2024 Google search volume for terms related to investing
  • Number of investors
  • Number of businesses receiving investments in 2024
  • Total amount of capital invested in businesses in 2024
  • Percentage change in amount of investment from 2019 to 2024

Based on those figures, provided mostly by Crunchbase, Texas sits at No. 3 on the list, behind No. 1 California and No. 2 New York.

Especially noteworthy for Texas is its investment total for 2024: more than $164.5 billion. From 2019 to 2024, the state saw a 440 percent jump in business investments, according to BrokerChooser. The same percentages are 204 percent for California and 396 percent for New York.

“There is definitely development and diversification in the American investment landscape, with impressive growth in areas that used to fly under the radar,” says Adam Nasli, head analyst at BrokerChooser.

According to Crunchbase, funding for Texas startups is off to a strong start in 2025. In the first three months of this year, venture capital investors poured nearly $2.9 billion into Lone Star State companies, Crunchbase data shows. Crunchbase attributes that healthy dollar amount to “enthusiasm around cybersecurity, defense tech, robotics, and de-extincting mammoths.”

During the first quarter of this year, roughly two-thirds of VC funding in Texas went to just five companies, says Crunchbase. Those companies are Austin-based Apptronik, Austin-based Colossal Biosciences, Dallas-based Island, Austin-based NinjaOne, and Austin-based Saronic.

A concept design rendering of Persona AI's humanoid robot. Co-founder and CEO Nic Radford expects customers to take delivery of its first robot in 18 to 24 months. Rendering courtesy Persona AI.

Houston humanoid robotics startup secures millions in pre-seed funding

my robot

A Houston-based startup developing AI-powered humanoid robots for manufacturers and other businesses has raised more than $10 million in pre-seed funding less than a year after its founding.

Nic Radford, co-founder and CEO of Persona AI, declines to disclose the amount raised. However, he tells InnovationMap that it was an eight-figure total.

While not providing names, Radford says Persona AI’s first outside investors include VC firms, institutions and high-net-worth individuals in the U.S., London and Singapore. One of the high-net-worth investors was among the first employees at SpaceX, Elon Musk’s Brownsville, Texas-based aerospace company, according to Radford.

No Houston investors have participated in the funding round yet. However, Radford says he’s working on bringing aboard one local investor before the round closes.

“Houston’s the perfect city to do a company like this in,” Radford says. “It’s just not the perfect investor climate, but it's the perfect city from a customer aspect.”

Persona AI’s pre-seed funding comes amid a dramatic surge in investment capital chasing AI startups. Global funding for AI-related companies exceeded $100 billion in 2024, up more than 80 percent from the 2023 total, Crunchbase data shows.

Radford and co-founder Jerry Pratt, the startup’s chief technology officer, bootstrapped Persona AI. The third co-founder, Jide Akinyode, serves as Persona AI’s chief operating officer. Radford and Akinyode helped develop NASA’s six-foot-two-inch Valkyrie humanoid robot and both are former employees of Webster-based Nauticus Robotics, a provider of autonomous subsea robots.

Persona AI launched last June in what Radford calls “anti-stealth mode.” The startup is close to announcing its first customer, which does business in the industrial sector. Persona AI expects customers to take delivery of its first robot in 18 to 24 months, Radford says.

Persona AI will operate primarily as a robotics-as-a-service provider, with the company retaining ownership of the lifelike robots and selling the labor that they supply. Radford says the startup’s robots will help alleviate a shortage of skilled labor in sectors like manufacturing.

A report released last year by consulting firm Deloitte and the Manufacturing Institute declared that as many as 1.9 million manufacturing jobs in the U.S. could go unfilled between 2024 and 2033 due to a skills gap and a tight labor market.

Persona AI competes in a market with enormous potential. In November, analysts at Citi Global Insights projected that the global market for humanoid robots could soar to $7 trillion by 2050, with 650 million of the robots tackling all sorts of jobs.

Radford says Personal AI is developing a “rugged” five-foot-eight-inch humanoid robot that’s able to survive tough indoor and outdoor conditions and take on tasks like carting around sheet metal, tending to metal-stamping machines, moving storage bins and handling order fulfillment. He likens his company’s robot prototype to a Ford F-150 pickup truck, compared to the less-sturdy versions produced by robotics competitors, which he calls the Toyota Camry or Volkswagen Beetles of the field.

Radford says he and his team “are building a really compelling startup in one of the hottest markets and one of the greatest cities.” Employees work at Persona AI’s headquarters in Houston or its satellite office in Pensacola, Florida, where Pratt is located.

“We don’t hire anybody that’s not a rock star or superstar,” says Radford, “and I think the city is going to benefit tremendously from our efforts at Persona.”

Radford saw his last company, Nauticus Robotics, from founding to IPO, left the company in January and previously told InnovationMap that he couldn't get the idea of advancing humanoid robotics out of his head. Read more here.

The University of Texas MD Anderson Cancer Center was recognized for advancements in electronic functionality, AI and robotics. Photo via mdanderson.org

Houston hospital named among smartest in the nation

hi, tech

Houston hospitals are chock-full of smart people. But they’re also equipped with lots of “smart” technology. In fact, five local hospitals appear on Newsweek’s new list of the world’s best “smart” hospitals.

To compile the list, Newsweek teamed up with data provider Statista to rank the world’s top 330 hospitals for the use of smart technology. The ranking factors were electronic functionality, telemedicine, digital imaging, artificial intelligence (AI), and robotics.

The highest-ranked Houston hospital is the University of Texas MD Anderson Cancer Center, appearing at No. 6. The hospital was recognized for advancements in electronic functionality, AI and robotics.

“MD Anderson has a significant opportunity and a responsibility to our many stakeholders to create a digital ecosystem that promotes collaboration and advances scientific discovery to enhance patient outcomes,” David Jaffray, the cancer center’s chief technology and digital officer, said in a 2021 news release.

“Through our ongoing focus on enabling the use of new technologies to place quantitative data in context for our researchers,” Jaffray added, “we foster cutting-edge oncology data science to inform our cancer discovery research and to accelerate translation of our research findings into benefits for cancer patients.”

Ahead of MD Anderson on the list are:

  1. Mayo Clinic in Rochester, Minnesota.
  2. Cleveland Clinic in Cleveland.
  3. Massachusetts General Hospital in Boston.
  4. Johns Hopkins Hospital in Baltimore.
  5. Mount Sinai Hospital in New York City.

Other Houston hospitals on the list are:

  • Houston Methodist Hospital, No. 11.
  • Baylor St. Luke’s Medical Center, No. 105.
  • Texas Children’s Hospital, No. 197.
  • Memorial Hermann-Texas Medical Center, No. 266.
You might be seeing more robots in restaurants, thanks to Texas-based RobotLAB. Photo courtesy of RobotLAB

Texas robotics company expands in Houston with service-focused automation technology

order's up

Snazzy sombrero-wearing robots are gliding over to your table, carrying chips, salsa, and drinks, electronic eyes wide open on its interactive screen, ready to serve. The bot, provided by the new Houston franchise branch of RobotLAB Inc., debuted at Johnny Tamales Tex-Mex Cantina in Missouri City last week.

The restaurant's owner, Anil Patel, arranged for a one-month trial rental of the machine. But so far, he tells InnovationMap that he’s pleased with his “no-brainer” decision to add a small food delivery robot, which he says has huge marketing potential.

“I’m a sucker for technology. You look at it, and I think this is the future,” says Patel, who used to work in the health care industry.

That vision is shared by Elad Inbar, founder and CEO of Dallas-based RobotLAB, who in July expanded his company’s Texas franchise operations with the opening of a Houston branch.

“For many years, robots were toys — for geeks. You had to build them yourself, program them yourself,” Inbar says.

Elad Inbar is the founder and CEO of Dallas-based RobotLAB. Photo courtesy of RobotLAB

But the electronics revolution that brought handheld phones to the mainstream inspired Inbar to turn that concept to robotics when he formed RobotLAB in 2007.

“To me, this was completely a wake up call — seeing the market shift, and you know, bringing the opportunity to the mass market,” he says.

The company started by providing small robots to schools, and the company now works with two-thirds of the school districts in the country, Inbar says, touting that it is the "largest, most experienced" robotics company.

Keith Edwards, who owns RobotLAB’s Houston franchise with his brother Daniel, said his office aims to provide 50 robots in its first year of operation. While the use of robots has become more common globally, especially in Asian hotels and restaurants, for American business owners, robots are definitely not a standard decision, Edwards says.

The challenge lies in educating them about how robotics provides a solution for staffing shortages, Edwards says. With the touch of a button, the robot used in Patel’s restaurant can be programmed to sing happy birthday and deliver a dessert, or return dirty dishes back to the kitchen sink.

Through its franchisees, RobotLAB has already set up robots inside numerous restaurants, including eight food delivery models at four Houston locations of revolving sushi bar Kura Sushi.

Wings Over Frisco in the Dallas metro area and entertainment complex AREA 254 in Killeen also use RobotLAB food delivery robots. In August, the Tulsa International Airport introduced, on a trial basis, “Cloi,” another bot from RobotLAB, that guides visitors and has a selfie feature.

RobotLAB provides some 50 types of robots, Inbar says, ranging in function from cleaning, warehouse stacking, to food delivery, with plans and potential for more.

The company also has a presence in the senior living space, with a humanoid life-sized interactive robot named Pepper, that works with residents who suffer from dementia. While no Houston senior communities have yet come on board, Inbar says the company works with assisted living communities in Dallas, Wisconsin, New Jersey and Virginia.

One of RobotLAB's devices specializes in senior care facilities. Photo courtesy of RobotLAB

RobotLAB does not manufacture the robots, but provides the models, which can be purchased or leased. The company partners with manufacturers all over the world to provide the robots.

The cost to purchase a robot outright ranges widely, anywhere from $3,400 for an autonomous vacuum cleaner to $32,000 for a life-sized model, according to the website.

It provides one-on-one service for all aspects of implementation and any repair.

The proof of concept and related costs for the trial run for the Johnny Tamales robot was $2,990, Edwards says, which would apply toward a possible purchase of the $9,500 robot.

The daily labor cost, according to Inbar, for a food delivery robot amounts to about $15 to $17 a day, and for cleaning robots, about $27 a day.

The delivery robots run on a battery charge which lasts which lasts from nine to 13 hours, depending on the model. A cleaning robot does not last as long, but can clean 20,000 square feet on a single charge, Inbar says, and discharge dirty water, charge itself and return to work.

In the coming weeks, Inbar says he plans a demonstration with area firefighters at a training facility in Dallas, to show them bots that can clear debris, fight fires and help perform rescues.

The fastest-growing sector of his business now is the cleaning robot, as the service industry, in particular, struggles with labor challenges, Inbar says. The Houston office just sold its first cleaning robot, Edwards said.

“There is more demand for cleaning automation, simply because people don’t want to do the job anymore,” says Inbar. “We are hearing from everyone, in every market sector, from hotels, to assisted living facilities, to warehouses, you name it, supermarkets — even movie theaters. They can’t find people to clean. Putting that on autopilot, in a way, is the solution."

Edwards and Inbar say RobotLAB’s customized local service and connection provides the missing integration link for many business owners, who are intrigued by robots but may be way of what is involved with the equipment.

“We are basically the car dealership model of robotics,” Inbar says.

Christina Garavaglia, executive director of the Southeast Texas region of the Texas Restaurant Association, says the industry usually adapts cutting-edge technology early on, and robots are no exception.

“One of the primary reasons for this is that technology, hopefully, if it does what it’s intended, provides a lot of efficiency, and can help with some of the very tight margins that all of our restaurants work with,” she says.

Local restaurateurs have generally had positive reactions to robots, she says.

RobotLAB has food delivery robots rolling out in Houston. Photo courtesy of RobotLAB

Eric’s Restaurant at the Hilton University of Houston Hotel was the first Texas restaurant to introduce a robot two years ago, as part of its student training, Garavaglia says, adding that she expects more restaurateurs to come on board.

The industry has “barely scanned the surface” in leveraging the potential for robots to maximize efficiency and create a unique customer experience, she said.

Jim Lewis, president of AREA 254, a 45,000-square-foot entertainment complex in Killeen, purchased three robots from RobotLAB and began using them in January.

The robot keeps the food warm, in its enclosed shelves, and frees up the servers. One robot can carry up to four pizzas, and go from table to table in one trip, directed by a software system activated by the QR code order at the table. And, just as important for Lewis, the robots provide the “fun, cool factor.”

“People love it, and robots put smiles on people’s faces,” Lewis says. “My guess is that it will pick up a lot of steam, especially in the family entertainment space, where buildings are so big. The robot provides a very practical solution to moving food long distances.”

Inbar says his company does not want to replace human labor with his robots, rather enhance it and free up time for humans while filling a labor gap prompted by a shift that began in the wake of the COVID pandemic.

“This is where the challenge is. They need people to move boxes in warehouses, cook, and clean floors, so automation is the solution,” Inbar says.

Garavaglia says restaurant servers may even see their tips increase, as they can engage longer with customers as the robot handles other chores. The gap between the tip and the amount of work done to earn it would close, she explains.

Most high-end restaurants pride themselves on the customer experience, she said, and “that can only be provided by a human person.”

“Feeling a trust, sense of connection, that is really a human trait, a human characteristic. So long as that is the case, human servers and human employees will always be necessary,” she says.

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Houston-based Fervo Energy bumps up IPO target to $1.82 billion

IPO update

Houston-based geothermal power company Fervo Energy is now eyeing an IPO that would raise $1.75 billion to $1.82 billion, up from the previous target of $1.33 billion.

In paperwork filed Monday, May 11 with the U.S. Securities and Exchange Commission, Fervo says it plans to sell 70 million shares of Class A common stock at $25 to $26 per share.

In addition, Fervo expects to grant underwriters 30-day options to buy up to 8.33 million additional shares of Class A common stock. This could raise nearly $200 million.

When it announced the IPO on May 4, Fervo aimed to sell 55.56 million shares at $21 to $24 per share, which would have raised $1.17 billion to $1.33 billion. The initial valuation target was $6.5 billion.

A date for the IPO hasn’t been scheduled. Fervo’s stock will be listed on Nasdaq under the ticker symbol FRVO.

Fervo, founded in 2017, has attracted about $1.5 billion in funding from investors such as Bill Gates-founded Breakthrough Energy Ventures, Google, Mitsubishi Heavy Industries, Devon Energy (which is moving its headquarters to Houston), Tesla co-founder JB Straubel, CalSTRS, Liberty Mutual Investments, AllianceBernstein, JPMorgan, Bank of America and Sumitomo Mitsui Trust Bank.

Fervo’s marquee project is Cape Station in Beaver County, Utah, the world’s largest EGS (enhanced geothermal system) project. The first phase will deliver 100 megawatts of baseload clean power, with the second phase adding another 400 megawatts. The site can accommodate 2 gigawatts of geothermal energy. Fervo holds more than 595,000 leased acres for potential expansion.

Cape Station has secured power purchase agreements for the entire 500-megawatt capacity. Customers include Houston-based Shell Energy North America and Southern California Edison.

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This article originally appeared on our sister site, EnergyCapitalHTX.com.

Texas university's new flight academy opens at Houston Spaceport

cleared for takeoff

The vehicles may not have “student driver” stickers on them, but Texas Southern University has moved a dozen planes into its new training facility at the Houston Spaceport, opening the way for student flyers to use the facility.

TSU previously reached a deal with Houston Airports and the City of Houston in 2023 to house its prospective Flight Academy at Ellington Field. At the time, TSU had a small fleet of nine planes for student use, but a $5.5 million investment from the city greatly expanded the space available.

The Flight Academy includes a 20,000-square-foot hangar that serves as a TSU satellite campus. The school now has a fleet of 12 Cirrus SR20 aircraft that were acquired last year through state and alumni funding. An additional 4,500 square feet is used as classroom and office space. An 8,000-gallon fuel tank will support flight training operations.

TSU first launched its Aviation Science Management program in 1986 and added a professional pilot program in 2016. The school is now part of the United Airlines pipeline program and has also forged relationships with Delta and Southwest.

“I want to commend Texas Southern University and Houston Airports for their leadership and partnership in advancing aviation education right here in our city,” Houston City Councilwoman Dr. Carolyn Evans-Shabazz in a press release.

“It connects our students to high-paying, high-demand careers in aviation and aerospace. This is how we grow a city in the right way—by investing in workforce development, aligning education with industry and making sure our residents are prepared to lead in the industries of tomorrow. Houston is already a global leader in aerospace and projects like this strengthen that position even further, especially here at Ellington, where innovation and opportunity continue to take flight.”

The City of Houston signed an agreement to continue funding the academy for five years.

Amazon launches ultrafast, 30-minute delivery service across Houston

Amazon Now

More than 20 years after it redefined fast shipping, Amazon is preparing to raise the bar on consumer expectations again by offering to fulfill customers' most urgent product needs in Houston and other parts of the world in a half-hour or less for an extra fee.

The company, which revolutionized online shopping in 2005 with two-day deliveries for Prime members, is rapidly opening small order-processing hubs in dozens of U.S. and foreign cities to cater to shoppers who can't or don't want to wait for cough medicine to relieve flu symptoms or tomatoes for tonight's dinner salad.

The ultrafast service, called Amazon Now, first launched in India last June. Amazon says 30-minute deliveries now are also available in urban areas of the United States, Brazil, Mexico, Japan, the United Arab Emirates, the United Kingdom.

The mini-warehouses devoted to Amazon Now are about the size of a CVS drugstore. They stock about 3,500 products for expedited delivery, including beer, diapers, pet food, meat, nonprescription medications, playing cards and cellphone charging cables.

“We know that customers love speed and always have,” Beryl Tomay, Amazon’s head of transportation, told The Associated Press on Monday. “What we see customers doing, when we offer faster speeds, are they purchase more from Amazon. And Amazon becomes more top of mind for that or other types of items as well.”

In the U.S., the company first tested Amazon Now in Seattle, the home of its headquarters, and in Philadelphia. Most residents of the Dallas-Fort Worth area and Atlanta now have access as well. The service is also live in Dallas-Fort Worth, Denver, Minneapolis, Phoenix, Oklahoma City, Orlando, and dozens of other cities, Amazon said, with New York City and others expected by year-end.

The service charges for Amazon Now start at $3.99 for Prime members, who pay an annual fee of $139, and $13.99 for non-members. A $1.99 small basket fee applies to orders under $15, Amazon said.

The company's bet on a need for speed also comes as some consumers are rebelling against rushed deliveries as they weigh the potential impact on the environment and the workers tasked with preparing orders at a rapid rate.

Amazon’s approach
A relentless focus on speed helped Amazon build a logistics and e-commerce empire. After it made two days the new delivery time normal, Amazon moved into one-day and same-day deliveries for its Prime members. This spring, the company began making 90,000 products available in one hour or three hours at an extra cost.

The scaled down and sped up microhubs that are designed to handle 30-minute orders represent another step in Amazon's pursuit.

Only a handful of people prepare orders from aisles of shelves in the 5,000- to 10,000-square-foot facilities, unlike the sprawling fulfillment centers storing millions of items where Amazon employs a mix of human workers and robotics to pick and pack orders.

Amazon tailors the product inventory to each location and uses artificial intelligence and other technology to analyze what customers buy, as well as when and how often. The most popular U.S. purchases so far include soap, toothpaste, mouthwash, toilet plungers, bananas, limes and wireless earbuds, Amazon said.

The competition
Amazon’s attempt to up the instant gratification ante provides direct competition to on-demand food delivery platforms like Instacart, Uber Eats, DoorDash and Grubhub, which don't have the scale of the e-commerce titan, according to independent retail analyst Bruce Winder.

“What Amazon brings is their prowess in supply chain,” Winder said.

These smaller companies said they don't see Amazon as a threat, though, citing the hundreds of thousands of items they are able to deliver to users' doorsteps by partnering with various merchants and restaurants.

“DoorDash has a mission to empower grocers and retailers and augment their existing footprint, not to replace them,” DoorDash spokesperson Ali Musa said in an emailed statement. “We win only when they win, which is how we can offer over half a million grocery and retail items in under an hour across the country.”

Amazon also is in a race with Walmart to become the retailer that reliably gets orders to online shoppers in under an hour.

For an additional $10 on top of standard delivery charges, shoppers can place Walmart Express Delivery orders from among more than 100,000 products that are guaranteed to arrive in an hour. Many customers, however, are receiving the items under 30 minutes, Walmart CEO John Furner told analysts in February.

Domino's cautionary tale
Companies have promised deliveries in 30 minutes or less before, but the landscape also is littered with failed attempts to break the speed barrier.

The COVID-19 pandemic produced a flurry of companies that promised 10- to 15-minute grocery deliveries from microwarehouses in dense neighborhoods, according to Sucharita Kodali, an analyst at market research firm Forrester Research.

But soaring operating costs, low customer loyalty and the drying up of investor money ultimately caused most to fail before the pandemic was over, analysts said.

Domino’s in 1984 pushed a guarantee that customers would receive their pizzas for free if they weren't delivered in under a half-hour. The company amended the “30 minutes or it’s free” policy after two years, providing only a $3 discount for late deliveries.

The promotion helped Domino’s win market share, but it ended up tarnishing the company's reputation. It dropped the guarantee in December 1993 after a string of crashes and lawsuits involving drivers racing to meet the deadline.

Brad Jashinsky, a retail analyst at information technology research and consulting firm Gartner, said he thinks Amazon should take the pizza chain's experience as a cautionary tale.

“You get in trouble when you start overpromising something like that,” he said.

Amazon won't be making any time guarantees and instead plans to keep customers who chose the 30-minute delivery option updated on the progress of their orders, Tomay said.

“There's no rushing either in our building workers or the gig workers,” she said.

Taking it slow
Kodali thinks Amazon will need a lot of people placing orders around the same time from the same or adjacent apartment buildings for the 30-minute service to be cost-effective.

Consumers may appreciate rapid receipt of products like toilet paper and batteries, but retailers and logistics experts said they also see some online shoppers, especially members of Generation Z, choosing no-rush shipping for products they don't need in a hurry.

Amazon for several years has invited customers to skip one- or two-day delivery and to receive their orders on the same day in as few parcels as possible. Consolidating orders into fewer packages by electing to have them delivered at the same time cuts down on boxes, shipping envelopes and fuel use, analysts said.

“The millennials who came to age in an era that was on fast delivery came to expect it de facto, whereas ... Gen Z is more accepting of a slower speed than previous generations before them,” said Darby Meegan, a general manager at Flexport, a supply chain and logistics company that fulfills orders for thousands of online merchants.

Still, Amazon executives have cited positive early results for Amazon Now in India, where they said Prime members tripled their requests for 30-minute deliveries once they started using the service.

Amazon Now also is attracting more repeat American customers, Tomay said.

“It’s in early days and time will tell,” she said. “I think that it will be interesting to see how it evolves.”