One decent bet about this market is that it will become a true ride sharing(UBERpool And liftLine are working on that) market. That market have pretty decent network effect(because you need that shared trips will be as optimal as possible for all users, and people will be quite sensitive to longer AND more expensive trips, and it could also help if you met fun people,etc). Some also say that many ,even with self driving cars might use shared transport. Hard to tell.
