But I can't buy one. A startup that solved this problem would have to solve a lot of legal issues as well as technical ones.
Also Stanley can't drive in traffic. What I really want is something that can commute for me from San Francisco to Silicon Valley while I play video games.
Bart doesn't go to Silicon Valley, just to Millbrae. Even in SF Bart only goes through the Mission and downtown. If you don't live and work near Caltrain then public transportation between SF & the south bay is more or less not an option.