Looking for advice on a route from Michigan to Disney. Those of you who have taken 75 all the way how many mountains do you encounter? How big and steep are they? We are towing a 26ft TT with a Ford Expedition. How many lanes go through Atlanta? Do you have to do alot of lane changing in Atlanta? All the map routing services give you a different way to go. Have thought about 65 also? Any experiences out there? Rand McNally and Yahoo both take us over to the east coast picking up 40 in Tenesse and taking it over to 95? Thanks for your opinions.