And you came here looking for knowledgeable folks? Just kidding. Car count to me is mostly hit and miss. I don't need quantity to make it a good show, I just want to see quality. I have seen 45-50 car shows that weren't that great while attending a 15 car show that was outstanding. With USAC being involved, 32 is the number most folks look at. That is the number they normally lock into 4 heat races. If you get a lot more than that, you have qualifiers which many times don't produce good racing and just puts more wear and tear on the track surface. Anything less can still produce great racing depending upon who shows up. I'm sure that helps you out a lot. Clear as mud right?