I just about cried... I drove through Needles, CA yesterday for work and Diesel was 4.50! I'm glad Diesel vehicles have such a good range. I made it down to Quartzite w/ a 1/4 tank to spare and filled up there for about 3.80. For reference, I was in our Jetta TDI (business vehicle/trip) and made the loop from Tucson up to Kingman and back down through Bullhead City, Lake Havasu City, Parker and into Quartzite on the same tank. I probably could have made it all the way down to Yuma, but didn't want to chance it as that is an area where you most definitely DO NOT want to run out of fuel. I'm heading out to San Diego today. Hopefully the fuel prices there are a little better than Needles! OUCH!