I am not certain why people would want self-driving vehicles. Even if the technology could be perfected, what is the appeal of sitting in a vehicle staring out the window, when you could be actively engaged driving it? That would make car trips just about as unappealing as airplane trips, with the caveat that airplanes (at least for me) are unlikely to cause motion sickness if I do anything other than stare out the window.
Driving 1000 miles to visit family is painfully boring, worse when driving overnight. I’d rather drive manually onto the freeway, engage auto-drive, and sleep for a few hours while traversing hundreds of miles of dark roads.