The National Corvette Museum is here. They recently finished a big expansion and have more old cars on exhibit now.
We are approximately 1 hour north of Nashille on I-65. There are 2 parks here - a KOA and Beech Bend Campground. Neither is really great :-(
In Nashville there are 3 parks just up Music Valley Drive from the Opryland Hotel. We have stayed at the Jellystone one but they all look OK. Just the usual city BIG prices!