Not sure about the specifics here but to jump on your point about human drivers not being safe... 10000% we need safer designs for streets and roads, better ed

Not sure about the specifics here but to jump on your point about human drivers not being safe... 10000% we need safer designs for streets and roads, better education, automated enforcement of speed limits, dis-incentives for larger/heavier/more dangerous vehicles, ... All of these things need to be done, and can be done with existing technology today. We don't need self-driving cars to address our problems; they're essentially a distraction and an excuse to postpone improvements.