> It is interesting to note the difference in fuel consumption, if myou
> drive a big truck with an adjustable fifth-wheel (the "hitch" on the
> back of a semi-truck tractor).
>
> If it is moved toward the front of the truck to minimize the gap between
> cab and trailer fuel mileage is noticeably improved--even if the tractor
> is fitted with "spoilers" at the sides and top.
Sure. That's also the reason, why roadrailers are the most
energy-efficient freight trains.
--
I believe you are speaking of the Fourth Law of Thermodynamics, the Law of
Conservation of Bureaucracy. For every practical engineering solution, there is
an equal and contradictory obstacle put forward by a regulator because the
politics cannot be overcome. (Adam H. Kerman)
