i'm sure they had it set to run a ridiculously lean fuel mixture, and they probably took a long, long time to get up to speed.
was it an early gas/electric hybrid? running on battery power for some of the time is a good way to fudge economy numbers up a bit.
was that fuel mileage or gas mileage. mix the gas with some other fuel- say, ethanol or methanol- and get 50miles per gallon of fuel, but you can claim a couple hundred miles per gallon of gasoline..
i'm kind of curious as to what they did to the car to get that kind of number- what kind and size of engine, what was done to it, what kind of aero changes did they make, gearing, etc.
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