This is a great road that runs from Natchez to Nashville. It's the oddest road, it's 50 miles per hour, no Billboards, semi-trucks, and you have to be extremely respectful of bicyclists. We loved it. There are a few campgrounds on the parkway. We stayed at the Jeff Busby Park. He was a senator from the 1930's who proposed the park.
Here's a quick video of the stay, it was hot, humid and rainy, so we only stayed one night. It seemed like a nice area, we wished we could have stayed longer.