no. There isn't one. As I said in the OP, public transport is shit here because it was deliberately suppressed by the car industry (this is Detroit, Motown, Motor City) Otherwise you can bet both bollocks he's be doing that

Could this eventually be of help as a contingency plan? It's supposed to accommodate bicycles for in and around at each end.

Bus route connecting Ann Arbor and Detroit set to launch this year

Transportation networks propose Ann Arbor-Detroit express route

I've been watching that potential program for years. It's long overdue and always seems to fail before fruition. Fingers crossed though. I'm frankly surprised U of M doesn't have a link bus between the two campuses. Students at Dearborn are entitled to use all the facilities in Ann Arbor (and vice versa) (and Flint, although that's a little further aeway) ((let's see how long it takes for that genuine use of the name to pop up in his vanity searches :D))