I dunno, the whole fast casual movement seems to be catching on here. And most of the fast casual places are catering to people who want a fast meal but with real, fresh, non-processed ingredients. My rule would put a lot more focus on the existence of a drive through window and pre-processed ingredients.
I don't think those rules work. Many (nearly all ?) restaurants use some kind of pre-processed ingredients. And many fast-food places don't have a drive through window. In for instance Thailand the entire concept is even completely unheard of.