> I think this is an interesting question. We know that wind force increases
> with the square of the speed, so, if you double your speed, the force is
> four times as much. Traveling over the same distance, the energy required
> (force times distance) is four times a much. So, it appears miles per
> gallon gets considerably worse as speed increases.

Energy per time aka power is thus proportional to the cube of speed,
all else being equal.
Carl's Cougar shows that all else isn't equal :-).

Even if it were, reduced trip time at increased speed makes Harold's
Harol'd square law correct for absolute energy trequired and thus fuel
required.


                Russell
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