The big problem with ANY self-driving car is going to be the last .1%. Getting some sort of machine learning algorithm to drive well 99.9% of the time isn't that hard. Getting that same car to work well 99.999% of the time is where the challenge is.<p>The fact that Hotz seems like he doesn't recognize this fundamental problem is worrisome when thinking about the future of his company... and the field of self-driving cars. I wonder how quickly some sort of transit governing body is going to come down on him when they realize he can't possibly have done ANY kind of validation of the safety of his car.