You "fear for Vatler"? Dramatize much? This doesn't have to be scalable. Valets have been around since before cars were invented. In the past, parking garages were small businesses that had valets on staff. Before the cost of labor and land made it impossible, this was very common. One way Vatler's model could work is by licensing their software to garages or franchises that want to go back to having valets on staff, and make it inexpensive enough to be possible. The app would make it possible for a group of valets to service lots of different garages, instead of a single one.