Early thoughts offered here
Quoting Michael Brown at that thread:
Natchez Trace is an excellent riding experience on bicycle. It's like a national park with a nice smooth road paved through the middle. Plus it has low speed limits and police enforcement of those speeds and very little traffic. It would be ideal for a large group of e-bike riders. It's already a favorite for bike clubs around TN to ride..."
Sounds good to me
Also on the trace is the nation's first segmentally constructed concrete arch bridge. Really fun to ride across the top, a big bridge in the middle of no where makes the it very interesting, almost like you are flying across the mountains and valley.