I agree that highway driving is what I mostly care about. It's very very rare that I do enough non-highway driving that I really want someone else to drive. That said, there is one scenario where handling the trip end-to-end would be valuable for me: driving me home after I've been drinking. I'd love to be able to have a few glasses of wine at a restaurant or a party and still be able to get home without calling a taxi/rideshare. Of course, that last scenario means that any form of "supervised" autonomy is not helpful.