“Google has a lot of data from its fleet,” says Bryant Walker Smith, resident fellow at the Center for Internet and Society at Stanford Law School, who’s written about the legality of autonomous cars. “But it’s data that shows you how specially trained, highly educated, early-adopter types mostly in their 20s and 30s can navigate the roads of San Francisco, where it doesn’t snow or flood or all these things, in cars that are much nicer and newer than the average American’s car.”