And it's not just snow and things like that. I'm in NYC this weeek which I think we can agree is not some rural backwater irrelevant to the rollout of vehicles. Has anyone who thinks the vehicles tooling around Silicon Valley suburbs with a driver to take over seriously think they can navigate Times Square at rush hour (or theater getting out)? People are everywhere. Bicycles are flying in and out. Cars are jamming themselves into turns. Etc. I find this sort of driving difficult and I have plenty of experience with urban driving.