This is hardly a step forward in fuel efficiency.
"Engineers have proven that its possible, at least technically, to drive from coast to coast on only a gallon of gasoline. Granted, however, the vehicle they built goes about 10 to 25 miles an hour, can only fit one compact-sized person..."
Erm... we don't need engineers to prove that it's possible to drive coast to coast at 10 - 25mph on a gallon of gasoline. I can do that on my bicycle on much less than a gallon of gasoline.
Anyway, what these engineers have done is to power a faired tricycle with a little gasoline engine. This is hardly a step forward in fuel efficiency. All it does is waste gasoline by replacing pedal power with an internal combustion engine. Essentially, all it accomplishes is to allow the driver to get fat by sitting idle instead of burning the energy he/she must eat.
