Ok, so you are admitting it is an issue? You do realize there is very little surface parking in Oakland? I can almost always find street parking for games now, but there is very little chance I'd find it for a game with 40-50k. That would mean most likely a garage.
And forget the shuttle idea you have tossed out..there is no feasible way to shuttle 10-20k people to games from remote locations unless you are running 200 buses continuously.
Have you ever been to an away football game that operates remote shuttles? It really is no big deal...just ask anyone that has attended a Notre Dame football game [or Rutgers, etc.]...and ND regularly has 80K in attendance. Some of you must be really pathetic at solving problems. Although I rarely drive into Oakland for any reason, when I do, it only takes a couple of shots to find free on-street parking and have never been stuck in any sort of traffic--ever. And for those of you that suggest that Heinz Field is close and convenient for students living on campus--perhaps you should follow your own advice and park downtown and take PAT to Oakland. Hail to Pitt!