Now to work out an efficient fuel stop routine.
Rather than me type it up again, read this post from an earlier thread on the subject. That stretch of west Texas can catch you out if you don't fuel conservatively. I almost found myself out of fuel twice on a single trip back in November - once because I didn't stop when I should have, and the second time because I blindly trusted my GPS and followed it to a "gas station" that didn't actually exist.