Anyone else watch that show? Thought it went about like most intelligent
auto folks figured it would. For folks who missed it they tested Acetone
added to the fuel, a "ultra high efficiency carb", adding magnets on the
fuel line, running a diesel on waste veggie oil and running a car on
Hydrogen (first from a "Hydrogen reactor" and then from a tank.

No surprises except for the super carb which wasn't even close to stock
mileage numbers.

Acetone was shown to lose you mileage on both a carbed vehicle and a
modern injected one.
The high efficiency carb was a HUGE loser in that it gat well under what
the old factory carb could do.
Magnets did nothing (what a SHOCK huh)
The Hydrogen proved that the engine could run on it just fine BUT that
electrolysis is no where near an efficient way to generate it in enough
volume to run a vehicle, They also discovered that it can get
interesting if the engine backfire when using it....
And to no surprise the diesel ran on the filtered veggie oil with a
slight reduction in mileage. No surprise since Diesel designed the first
Diesel engines to run on veggie oil and other heavy oils run in them
just fine. However the quote Adam made was the real item, Yes the engine
runs fine on the veggie oil, and that, because it was free it seems like
a great idea, BUT once it becomes commonplace the oil will no longer be
FREE.