if myth-busters had done it correctly ! and not a half hearted attempt,
part of the system for replacement fuel, is a pulsed DC signal generator, ie: turning the gas generator on and off approx 48000 times a second! not AC,
if looked at with an oscilloscope the signal would look like a square wave but with the bottom flat on 0v.
this is adjustable via a potentiometer on the accelerator pedal, ie to increase the gas production with acceleration, plus the system they had made was the type that enhances the fuel burn, this increases the efficiency of a petrol engine from about 20 % to a staggering 65-80%
65 carb, 80 inj, giving you a shed load of more power, the savings are made when to do the same job ie: with less throttle less fuel is used,
also on MB they made one attempt, so far I'm on Mk-172 and always improving, and yes there has been some monumental cock-ups and mahoooooosive explosions , if you are going to have ago always try out-side and not in your kitchen, (i had to replace 49 tiles once!) and buy a new wall cupboard, but that's the cost of experimenting.