PHOTO PROVIDED Charlie Tahan is the driver in the movie "Drunk Bus," which was shot in Rochester. The unnamed co-star of “Drunk Bus,” now showing at The Little Theatre, is Rochester. The film’s co-directors, John Carlucci and Brandon LaGanke, and producer Eric Hollenbeck are back in town this weekend, — a reunion with the city that served as a stand-in for Kent, Ohio, the setting for their film with an indie vibe. “Drunk Bus” smells like something that could develop a cult following: the story of a bus driver who ferries hard-partying college students to and from the town’s bars and other alcohol-driven appointments.