I drive a truck 5 days a week between Knoxville and Charlotte, NC. I have yet to see the price of gas affect travel. Traffic patterns and density through Knoxville, Asheville, and Charlotte are unchanged since before Hurricane Katrina.
Dollywood has reportedly seen a 31% decrease in attendance so far this season, but the wet and unseasonably cold weather could be at play for at least part of that.
Jevic Transportation, a medium sized LTL carrier recently suspended operations and declared bankruptcy. It's owner, Sun Capital, cited high fuel costs and an economic downturn.