Technology tends to change product format. Smartphone best example. Perhaps those big MPVs and SUVs that Waymo (Chrysler Pacifica) and Uber (Volvo XC90) are using, are not the best to do driverless experiments with. Why not use a more physically suitable vehicle, by starting out with the human head?

https://medium.com/@sevehicle/guess-what-your-kid-will-still-need-to-get-a-driver-license-dda550519e61