Hey for all of you believing in Global warming, check the stats of who actually believes in this propaganda. The whole thing is not supported by the mass of the scientific community; reports are making way now to blow the whistle on the whole scam. Now on the other hand it is good to conserve, but the Gas mileage on that extreme F-650 beats the pants off of most of the large V-8 SUV's and half-tons out there on the market and like the people said, it is all set to be bio-diesel feed.