If we're going to borrow from aviation, why don't automakers develop some rudimentary automation (not autonomy) that would help avoid the most common kinds of crashes? For example something that might be automated in a modern aircraft is change flight level. The pilot can command a change to a given flight level and the automation takes care of it. Why don't we have a "change lanes" command for cars? Changing lanes is a leading cause of car collisions, and even people who do it successfully forget to use their signals, check their blind spots, etc. It seems like this level of automation (not autonomy!) would be easier to achieve.