eh, my argument is that as long as they are intelligent enough to safely get to the side of the road, I think there's a very large number of people who would be okay with a car that "broke down" every 10K miles if it was otherwise great. (heck, I've been in some sort of breakdown or accident in an uber more often than that, even not counting app failures, so people would probably tolerate a lot more than that if the things were really self-driving.)

Note, you still have the safety problems to solve. You need to know how to get out of the road if the road infrastructure is on the blink. I'm just saying that "I don't know what to do so I will pull over" as long as it doesn't happen too often, is an acceptable answer.