I'm guessing it's more Richard being "persnickety" about his car collection. And maybe insurance issues (not just for the cars, but for the two bus loads of people on the facility property. It could also be Newberry Park's requirement (through a use permit) that his facility isn't a "museum" or "tourist facility" and is prohibited from opening it up to "tourists." There could be several legitimate reasons why they have to say no. But as Mr. Blakesley above pointed out, the e-mail says "at this time."