I'm thinking about your drive. Is there a reason you are coming through Oklahoma? I think the shorter route between Dallas and Nashville is to go up I-30 which heads through Arkansas, but does not go through Oklahoma at all? There is a route to go up through Oklahoma City and then east on I-40 directly to Nashville, but I think that route is about 3 hours longer than going straight through Arkansas. If you are going the direct route, the only part of Oklahoma you even get close too is the very Southeast Corner which is a very rural area. There is Broken Bow lake and Beaver's Bend State Park, which I've heard is really pretty (never been there myself), but even that would be an hour off of your path to Nashville. I think you can go up that direction and then keep going north past the lake and take the Talimena scenic drive that a PP mentioned to cut back over to I-30, but I'm not sure how much time that would add to your drive- I think it would be a couple of hours longer. I've heard the Talimena drive is gorgeous in the fall when the colors are changing and I know people that make the 3 1/2 hour trek from OKC just to do that drive that time of year, but I'm not sure about other times of the year. Again, that is something else I've never done.