Then where do they get 100K+ people to show up for all those football games? I gather all those UofM alums are scattered well in and among the Wings fan base in metro Detroit. In fact, a few of them infest our very board.
For any Canadians coming over, they'd just catch I-94. It's a straight shot out from Detroit to AA.
In September, October or November, I have no issue with driving to Ann Arbor. But in early January? There was a huge snowfall here the year of the inaugural classic... in those conditions I'd imagine a fan in Royal Oak would rather head downtown, for example. And if Michigan was playing at the same time? Forget about it.
And, of course, it must be mentioned that there would be no students at this game which takes away ~20,000 people who attend every football game and contributed to that Big Chill crowd.