Re: "Who actually WANTS their car to be self-driving?"
This. I think it's become quite apparent that the powers-that-be have no clue how to solve the traffic problem in cities. I believe they are hanging their hopes that self-driving will fix it before the transportation system completely breaks down.
I come from a relatively small city, Salt Lake UT, and the traffic is so bad that they can't add roads fast enough. Even the 12-lane N/S freeway has become saturated already. They are pulling out all the stops to implement novel traffic control(diverging diamonds, continuous flow, dynamic direction lanes, left turn after intersection), but it doesn't help much and are actually somewhat more dangerous as people are forced to understand them in situ.