I'm not saying that there couldn't be a huge reduction in accidents by autonomous vehicles but that the few accidents that do happen may be so inexplicably trag

I'm not saying that there couldn't be a huge reduction in accidents by autonomous vehicles but that the few accidents that do happen may be so inexplicably tragic and mind-numbingly preventable for a human driver, that selling the shift may be difficult. This would not just affect the adoption of autonomous vehicles but all kinds of automated systems without direct human oversight. If the system makes too many mistakes a human would catch but prevents many mistakes a human wouldn't, the best of both worlds is to have a human in the loop and catch all the mistakes that can be made.