This is interesting. Essentially they'll mostly going to be one-shot or one-off characters no or is it a bit like "The Booth at the End" where the story only occurs in the bus, but we can have characters that are repeat riders and their story end only when they are done with the bus? 

Direction wise where can we take it with characters? Are going for something more supernatural/sci-fi, purely normal with only hints of mysticism, or completely vanilla and the drama only occurs is character-driven in a completely normal setting?