Author: Cade Metz / Source: New York Times

Starting this week, two small self-driving cars made by Nuro, a start-up, will chug along at no faster than 25 miles an hour to deliver groceries in Scottsdale, Ariz. Caitlin O’Hara for The New York Times
SCOTTSDALE, Ariz. — Last Thursday morning in the desert town of Scottsdale, Ariz.
, a tiny robotic car turned onto a neighborhood street and pulled up to a home with a Spanish-tiled roof and synthetic grass in the front yard.Not even half the size of a Volkswagen Beetle, the toylike vehicle had no driver and no passengers. Instead, it held six bags of groceries from the Fry’s Food Store down the road. One observer oohed and aahed over how cute the car seemed.
Designed by a start-up called Nuro, the vehicle was making a test run as part of a partnership with Fry’s on an autonomous delivery service. Starting this week, Nuro said, two of these small, electric cars will chug along local streets at no faster than 25 miles an hour to deliver groceries to nearby homes.
If it all looked a bit ridiculous, that’s because self-driving is still a technology in search of a purpose. With driverless passenger services from the likes of Waymo, Uber and General Motors slow to become realities, the autonomous industry is casting about for practical uses — and hitting upon experiments like food deliveries from cars that make a golf cart seem spacious.
Other start-ups are now moving self-driving technology off roads altogether and onto sidewalks, avoiding the risks of traffic. (There are regulatory hurdles here, too.
) Postmates, a San Francisco delivery start-up, announced plans last week to offer a service that features a robotic shopping cart that runs along sidewalks and has digital eyes that blink every now and again. Still other companies are targeting long-haul trucking, in which driverless vehicles carry cases of beer and other goods, but not passengers.
Nuro’s mini cars are running as part of a partnership with Fry’s Food Store on an autonomous delivery service.
“After maybe biting off more than they could chew, people are concentrating on one particular part of the problem they might be able to actually make money from,” said Tarin Ziyaee, who worked on autonomous technologies at Apple and who recently left Voyage, a company that is bringing self-driving cars to retirement communities.
As a whole, autonomous vehicles are still three to four years from the point where they can make regular trips with no safety drivers, said Don Burnette, chief executive and founder of the driverless trucking company Kodiak Robotics. Autonomous passenger services, he added, are more like seven to 10 years away.
“The more people work on urban self-driving, the more they realize what a long road it is,” he said.
Nuro was founded in 2016 by Dave Ferguson and Jiajun Zhu, two key engineers from Google’s self-driving project, which eventually morphed into the…
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