Nashville to Harrisburg
First of all, we're from Texas, so we don't know this area.
Secondly, we have to travel from Nashville to Harrisburg in one day, so we don't have much time for lunch.
Any suggestions about which route has a better lunch stop and/or is more scenic?
I-65/71 up through Louisville, Cincinnati and Columbus?
Or I-40/81 up through Knoxville, and Roanoke?