This forum looks dead but looking for a place to eat south of ATL

The title says it all but will be in ATL this coming weekend and plan to do the NASCAR ride-along at Atlanta Motor Speedway. Any "must see" diners, drive-ins or dives that can't be missed south of Atlanta on our way to the speedway?
South of Atlanta, that's tough.

If you don't mind getting inside Atlanta, Fox Bros BBQ is great.