While there may be only a few on the actual road here in Canada, swing by the Ferrari, Maserati and Bentley, and Rolls Royce booths. Six figures buys a lot of car - heck, for 800 bucks you can buy a Maserati little toy car. I don't know if they'll let you get close enough for a sniff test, but if you can, ask if you can smell the leather in the Maserati. I swear it must be from the cows they get the Kobe beef from - it even smells more expensive. I must admit, all I could imagine was a Happy Meal spilled all over it. Can you say 'not their target buyer?'
I gave the NASCAR demonstrator thing a try - I decided it was driving itself as it careened wildly into walls. When a crowd gathered, I declared it must be malfunctioning and ran away.
Wear comfy shoes, drink lots of water and plan to spend the day. Bring a little extra cash, there are some nice booths if you like the logo'd stuff of your favourite brand.