Two final thoughts...
(1) Maybe within the next 50 years devs can instill into AI, some meaning of death. As it is, I find some comfort knowing my driver realizes the difference between a field and a 40-foot cliff along the coast of Big Sur, and our shared theory of mind regarding the consequence of swerving to avoid something in those situations.
(2) Regarding humans being more tolerant of human error. I think this might be because when a human gets in an accident, there is always the ability to reason that person is different than us: old, tired, drunk, distracted, etc. And both the situation and the cognition are unique to one person. Naturally, we would have done something different to avoid the accident, we reason. If an AI gets into an accident, and we know that same exact AI is driving 10 million cars, including our own, that freaks us out a little.