A Waymo minivan moves along a city street as an empty driver's seat and a moving steering wheel drive passengers during an autonomous vehicle ride, on April 7, 2021, in Chandler, Ariz. The U.S. government's highway safety agency has opened another investigation of automated driving systems, this time into crashes involving Waymo's self-driving vehicles. The National Highway Traffic Safety Administration posted documents detailing the probe on its website early Tuesday after getting 22 reports of Waymo vehicles either crashing or doing something that may have violated traffic laws. (AP Photo/Ross D. Franklin, File)