BigDaveS,
While the other poster's may feel that the aforementioned product is :ghey: , technically it doesn't make any sense.
Think about this. Auto manufacturers are doing all that they can to increase their CAFE numbers, to the extent that they are putting extra thin brake rotors on to reduce weight. Now, if there was something that they could do (and I assume that Honda etc have some of the best engineers working for them) for $70 or less on each car to increase the power by 30hp and the fuel efficiency by 30%, don't you think they would have done that already?
Just another snake oil vendor.
Bogatyr