Land Speeder
InstaH8R
Eric, don't trust mapquest on that one. Your gonna get your ass kicked on the hills about 97% of that trip. I would take HWY 80 to I20 to HWY 65 in La. then work my way north to Superlift. You'll get about 11 mpg's this way as compared to the 4 through Memphis. You will need to be creative on a place to sleep though.
Only problem is that I'm meeting Heckler in Memphis... dang, but wasting a tank of gas will cost me $75. I'll peep the map!