Jenn is correct. You are going to get on I-20 and you won't see anything at all interesting until you get to your destination. I have made the drive from Atlanta to Dallas more times that I can count and there just isn't much to see or do along the way. I live a couple of hours south of Dallas in Austin and personally, that is a great city to visit. San Antonio is also another 1.5 hours south of me and also a great place to see. If you need any other specifics, feel free to pm me and I am sure I can point you in the right direction.