As someone who's blind I've made this argument in the passed. I don't need 100% success as long as the failure mode won't injure me. Seven years ago I would have loved a car that would have driven me to and from work 95% of the time, and refused to take the other 5% if the weather forecast was bad enough that the self driving wouldn't work correctly. I'd also be fine with the car pulling over to the side of the road if it got confused and waiting for someone remote to take control and drive until it was out of the situation where autonomous driving wouldn't work. Given the fact that I now work remote and am married to someone who drives if you told me I could by a car with autonomous driving for $50000 now I don't think I'd do it. I'm interested to see just how good autonomous driving gets and if it drives down the prices of taxi services. At this point I'd rather see an autonomous taxi service offering lower rates then Uber instead of buying my own car with autonomous driving.