Amtrak, airlines might find robocars useful
...And particularly Amtrak. After all, it has numerous small and underserved stations that only really link to places by either car or poor transit connections, and the current low usage of those stations might render a car rental facility impractical. Robocars can help by eliminating the need to pay a chauffeur, thus freeing them up to drive to the station. As for trains themselves, I'm sure there'll always be some demand for them, because they are big and they offer socializing opportunities (not to mention that there are strong traveling traditions associated with rail). I also suspect that there are people out there who want to travel by train but find suburban destinations inconvenient - and robocars might help there, too. The same goes for airlines, but the existence of car rental agencies at airports kind of lessens the impact of robocars.
