SO MUCH FUN!
Get there early and you can watch all of the cars roll-in. It's like a mini car parade! There's a nice $$$ lot up top where the coffee and donuts (free, but you should donate monies) are located. Then the lot further down is everybody else.
Tons to see, walk around, bring your dog - it's all outside.
There's a breakfast in the hotel too, but didn't make it to that.
Best tip about this place: Car owners tend to group together - Fords park near other fords, etc - it's pretty neat!