Given that we have 40,000 or more deaths per year in auto fatalities in this nation alone, it is a given that we will continue having them as autonomous cars come into being. Maybe they get reduced. That is still an open question but there is good reason to believe that auto fatalities may overall be decreased in a world where cars drive themselves. However, I don't see us ever getting to zero fatalities or anywhere close to it. As one who drives the highways on a regular basis, I'm actually amazed that we don't have more fatalities. Same with commercial air travel.
I am not saying that the idea is bad. I am saying the tech clearly isn’t ready to be unleashed on the public. I live near an airport/military aviation base. 10 crashes in the vicinity in 20 years. Why? Fire fighting aircraft and air racing. I can live with that. A self driving car that can’t “see” me under certain conditions and is experimental is not acceptable.