If you care to see some military sites, the Mighty 8th Museum is on 95, just north of Savannah. It's a nice museum that honors the 8th Air Force and is easy on and easy off 95.
After that you can detour to Beaufort, SC, to visit Parris Island, the Marine Corps Training Facility, which also has a small, but interesting, museum and if you're there on a Friday you can see the latest class of recruits graduate. Beaufort is a pretty town, with a number of nice restaurants in the downtown area and Marine Corps Air Station Beaufort is the sole training facility for the F35's. They also have F-18's there and we locals hear "the sound of freedom" pretty much daily as both planes regularly fly all over the surrounding areas.