They have every kind of car (and some trucks) imaginable.
Old, new, bugs to Lambos, import and domestic.
You can bring your wheels and park inside, or park outside and walk in: no charge, but there generally is a coffee tent with some sort of charity.
You can still come and hang out - the more, the merrier.
Generally there are some Model S, occasionally a Roadster might also be there.
This past weekend, a dad from St. Louis drove both his sons down to Dallas C&C as a birthday present for the 16 year old.
I believe he started out wanting a Mustang, but you probably know what his new dream car is now...