Self-driving cars don't have to be better than humans at everything in order to be objectively better drivers than humans. In 2010, 32,999 people died in car crashes in the US [0]. If self-driving cars are on-balance 1% better than human beings at driving, then 329 lives are saved.
[0]: https://en.wikipedia.org/wiki/List_of_motor_vehicle_deaths_i...
Seriously speaking from perspective of a truck driver.
The reasons truck driver backed into thing are: He couldn’t see it. It wasn’t there when he started.
Horn and flash of lights would stop a human driver. When I back up a truck I use all my senses, since I can’t see much. Easiest fix for the robot thingy - add horn and lights. (And wait until all residents start complaining)
All you have to do to cement a driverless-car hegemony is to stop issuing new driver's licenses. 50 years later: no more drivers.
Some people love driving, and some people love riding horses, but you don’t see many horses on city streets today.