Sometimes I like to drive nowhere in particular. If I’m on vacation, I may just be looking around with no particular destination. I may stop someplace on a whim. People don’t always drive with fixed start and end points. If I’m on a highway and suddenly decide to stop at a rest area I can change lanes in fairly short order. I don’t know how a self driving car would work with how people drive.

I think establishing legal culpability would be fairly straightforward. But existing strict liability laws could be problematic for manufacturers.

I think voluntary adoption is the best way to go. Insurance rates should heavily favor self driving cars anyway. And a sort of herd immunity will result as many accidents result from the actions of more than one car.