Mike Johns was trapped. He had taken a taxi to an airport in Phoenix, Arizona, last December. But instead of dropping him off, the car kept driving in circles around the parking lot. Johns couldn’t tell the driver to stop though—because there was no driver! The taxi was a self-driving car operated by a company called Waymo.
By using the company’s app to talk to a representative from Waymo, Johns was able to get the car to park safely. He boarded his flight on time despite the dizzying detour.
A car that drives itself may seem like something from the future. But companies have been testing autonomous vehicles on America’s roads for more than a decade. Today several automakers sell cars with self-driving features. Meanwhile, Phoenix is one of four U.S. cities where passengers can catch a ride in a Waymo robotaxi.
Driverless cars use cameras and sensors to detect their surroundings. Artificial intelligence, or AI, processes information to help the car act like a human driver would. And the more autonomous vehicles drive, the more they learn. Waymo reports that its cars have driven more than 40 million miles.
But many people argue that the self-driving technology still has a long way to go. One research organization estimates that autonomous vehicles will need at least 11 billion miles of road testing before they can match the abilities of a human driver.