Well, I'm assuming if you or DH were a NASCAR fan, you would know there are several of the team shops/headquarters there that you can tour. Plus, there's Lowes Motor Speedway where can potentially tour and certain weekends they host the Richard Petty driving experience where you can ride along or drive a race car.
Also, there is Carowinds...depending on what kinds of things you like.
Don't know where the thumbsdown came from?