Great idea! We do this every year for FJ Cruisers in Ouray, CO. Basically invade the town, double it's population, and drink all their beer ad occupy all their hotels.
TRD usually makes it out to t and even some Toyota engineers. Raffles, food, etc. It's an awesome time. I imagine for cars, you don't want to invade a cold mountain town, but, to give everyone an example along with the Supra one:
http://www.fjsummit.org/