Dust; I am coming along about a week or so behind you. My truck only has a 24 gallon tank and gets 10-11 with my camper. I was going to and still may do this with my Harley it has a range of 200 miles. I had not planned on bringing along any spare gas but a 2 gallon for the generator. In my planning I have seen enough evidence that gas is availible every 100 miles or so. I would bring that extra 5 and maybe a tow strap in case I get in front of you and need some help. When we did this with my family in 1971 dad had a secound tank installed in the truck. I remember switching tanks on the fly. I also remember waiting in a small rodside stop for the tanker to come and refill the station supply, so we could proceed. I have not been back since looking forward to it.