People accept that humans are imperfect and cause accidents. Accepting that computers will make mistakes and kill people is another story. Especially if the owner of the car is a 1 percenter or a mega corporation and it kills an innocent bystander.
Also, people aren't that accepting of human imperfection and expect to see people have licences taken away and jailed where they've been deemed to be behaving recklessly (even if they've racked up huge numbers of miles with no previous incidents)
