I think you underestimate the role of the driver.  The human does much more than operate the vehicle.  When a car breaks down the human is there to communicate and negotiate the situation.  When a human stops traffic, as one did to me this morning because her puppy had gotten off leash, she is communicating with a human driver.  Or in a construction zone where a workman needs to stop traffic to allow a truck to turn.  An autodrive car, lacking that eye-to-eye communication we are so good at, could be very dangerous in such situations.<p>How will an autodrive tesla deal with a police check?