It’s mainly about North American cars and trucks. If you need a part for that 1932 Ford or Chevy, this is the show. There are vendors who specialize in make, period, mechanical, electrical and body.
There is a small classic car corral with usually 10-12 classic NA cars/trucks for sale. There are people wandering around with posters front and back announcing for sale or wanted.
It truly is an education in classic car/truck ownership, restoration and preservation. You get to meet fellow enthusiasts who just happen to be selling parts and services!