Good question! I believe that someday after a lot of accidents and deaths they will find a way to keep it perfectly safe, but, in order to do that one might as well take a train because it will require designated paths that no one can "accidentally" cross into. I trust technology, but, I don't like the lack of human backup. How many times has ones computer crashed? That can happen with a computerized vehicle as well. Perhaps more electronic backup is involved then in your home computer, but, if nothing else the mess with the ski lift in Georgia loudly lets us know that things fail and with vehicles it can be very catastrophically.
Technology aside, I spent my life loving to drive places. From the fact that I was standing at the door of the DMV on my 16th Birthday to get my drivers license to the fact that to this very day I love road trips. I really cannot get behind just sitting on my butt and doing nothing 24/7 which is what this is all coming too. At the risk of jinxing it, I have driven literally millions of miles just with my own vehicles, not counting the years that I drove buses for a living without one single accident (at fault or otherwise, 54 years and counting). I'm still not tired of it. Why do we need to let machines do everything for us completely? Granted motor vehicles were at one point one of those "machines" that would never replace a horse, but, it depresses me that one more skill goes by the wayside.