>>- In the event of a collision involving self driving vehicle(s), where does responsibility lie?
>>- What if your car decides to drive you through a guard rail and over a cliff, to avoid hitting a gaggle of school children who have wandered onto the road?
>>- Your friendly neighbourhood political strongman's motorcade is approached at high speed by a suicide car bomber. His motorcade overrides your car and maneuvers it into the path of the suicide bomber. You get a posthumous medal and your widow gets some flowers

Presumably the same queries apply whenever you take a bus, taxi or Uber. I guess we can look at cities like London where many/most locals don't even have a motor vehicle.