Asheville, NC or the Little Switzerland area (Spruce Pine, NC) would be a great place. Blue Ridge Parkway, Grandfather Mountain, Mt. Mitchell, Boone, The Biltmore Estate, The Grove Park Inni vote western NC or east TN. Maybe Little Switzerland, NC http://www.littleswitzerlandnc.com/
These places are close to or are in Asheville and make for great driving.
I know it's a long way from MI. Is there another TDI Fest in the southeast?