The Waymo driverless car is displayed during a Google event Tuesday, Dec. 13, 2016, in San Francisco.
The Waymo driverless car is displayed during a Google event Tuesday, Dec. 13, 2016, in San Francisco. Eric Risberg AP
The Waymo driverless car is displayed during a Google event Tuesday, Dec. 13, 2016, in San Francisco. Eric Risberg AP