yes to horse track... the highlighted above, along with the topography and close proximity the stadium would be the taj mahl version where all of the parking associated with the football facility would be were tennis courts are along with a couple hundred overflow and keep the yellow lot in tack.
the below is what Texas is doing which obviously you have the money (70 million cost) anything is possible this facility incorporates underground parking under the practice field and is needed because the facility is next to the stadium..
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https://www.burntorangenation.com/2...s-longhorns-practice-facility-images-location
i know we are a decade or more away, but if the stadium is ever enlarged by 15K parking will have to be addressed in some fashion...