I love the idea of having a car that drives and leaves me to do other stuff - but I can't use a laptop (or even read) in the back of car, I get rather queasy.
I also much prefer doing the driving to being a passenger - so I think the reality for me would that a self driving car would be rather less attractive than you might think, at least for longer journeys.
I've always found the reading-in-the-car/motionsickness thing to be very interesting...
I was affected by it for a long time, then suddenly I decided to simply try to 'will' myself out of it, psyching myself into believing that it was all in my head anyway.
The surprising thing is I believe it's worked for me. Telling myself I won't get sick allows me to get caught up on books during long car rides. If I think I will, I'll be horribly nauseous.
I also much prefer doing the driving to being a passenger - so I think the reality for me would that a self driving car would be rather less attractive than you might think, at least for longer journeys.