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Ok, now that all your BS meters have been pegged, lets think outside the box( and yes this is purely speculation).Doug has an electrical engineering degree, and apparently is a master mechanic too. He has been working with Ford for a few yrs now till the Big 3 started layin off folks and all the people he was workin with took an early retirement. (this all from research on the web) He has a patented block girdle that helps keep the block together under extreme stress. Articles from as early as January of this yr stated he was getting 80 mpg, said they had made some mods to the block but that most of the mods were of an electrical nature. Pondering all this and the claims he makes; one of the things I would conclude that he has done is eliminate the camshaft and incorporated a fully electronic and infinitely programable valve train; in other words selinoid activated valves controled by a computer. This is the only way (in my eyes) he would be able to meet all the claims he has made, and the article says he has been workin on this for 10 yrs now. If thats the case, then I would expect the fuel induction system has been dealt the same thought and modification as the valve train.
I'm not sayin he has it , but a few yrs ago students at MIT composed an article stating that with present available technology (and they outlined it) there was no reason an suv couldn't get 40mpg+.
BTW John Goodman seems to be makin quite a hit too with GM stuff, mostly puttin diesels in Hummers and the like and gettin some big mileage numbers and pretty good power and acceleration numbers, and he says 90% of what he is using are stock GM parts.
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