I dunno. There is a huge risk with driverless cars. I'm still questioning the tech. This is an incredibly hard problem and edge cases mean people die. This is one technology I won't be an early adopter of.
If you made a teleportation system where you could step in and come out the other end anywhere in the world, but there is a 1 in 1000 chance you step in and turn to green goo on the other end, should we still adopt it?
You basically save millions of lives, but people have seem to come to the notion that they protect their own fate when in a car (which is 100% untrue). You may be able to mitigate some accidents, but getting T-boned at an intersection when you have a green light, but no visibility, is possible every single day. Your wheel bearing could blow out on the highway and send you rolling into a ditch. A deer could step out in front of you and go through your windshield and kill you. You have no ability to save yourself other than praying.
But the edge-case argument also applies to human drivers. We suck at sudden, unexpected reactions. We panic. We overreact. We die. We kill.
I'm not saying that Self-Driving cars should just go on the road now no matter what - but the point of "edge cases kill people" is a perfectly valid argument against the status quo.
Oh, but you will.