If ten large 54 passenger busses have time to make 5 round trips, fully loaded, that moves a total of 2700 people to the game. Busses are inefficient. They can be a small part of the solution, but they aren't the answer.
Again, there is plenty of land, or mucho real estate as you put it, but it's parkland. Land that is utilized by 1.5M visitors a year for a myriad number of events, uses, recreation, etc. You'd need to turn the majority of that into parking lots to accommodate 7+ days of football a year. That sort of destruction of widely used community land just doesn't happen in this day and age. Robert Moses is not walking through that door.
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