I’m sure that was the original plan, but reality hit them hard, just like Atlantic City. Millville is a slum and their largest industry is prisons, with three of them. Since the reorg they’re a little more realistic about where their money is going to come from. Most of the Porsches and BMWs are because the PCA and BMW car clubs rent the tracks for driver education days.
I belong to both and have never bothered going. Just joined SCCA and might try it out next year.