Anyone driving our freeways in the past few days (that's everyone, right?) has seen the signs. Those message boards that usually tell of traffic delays and travel times now talk about Super Bowl shuttle service. Wow! Public transporation!!
I just looked into it and there are some really easy "park and ride" options to take you into the city for all of the hubbub. Start with this PDF flyer from DDOT. It shows shuttle stops at the Zoo in Royal Oak, the Macomb Mall, Northland, Fairlane Mall, Wayne State, and City Airport.
You can buy special transit passes that will work on DDOT and SMART buses as well as the People Mover and the Transit Windsor system. There's some impressive coordination here and the all access multi-day pass is only $20 (compare that to the cost and trouble of a few days of downtown parking)!