I think you should do a little reasearch on Mr. Pogues invention as well as others that have greatly improved gas mpg's before you post a reply. I have and it is a fact. I'm sure the car makers have made a decision that to let the high mileage inventions out of the bag will hurt their profits alot more than any poor sales that are usually temporary. They are also financially intertwined with the oil companies and of course if everyone got 100-200 mpg's that means alot less gas tax revenues. I think you are a bit naive about this subject. I'm not saying that the car and oil companies are evil...they are just protecting their profits but it is very short sighted of them. By the way, when I was 20, I copied some plans for a simpler vapor system using the radiator water for my big plymouth fury and went from 13 to 28 mpg's. The gas is formulated different now and takes a higher temp to vaporize or you would be seeing alot of simple hot water vapor systems on the market.
I think you ought to learn a little more science.
A fool and his money are soon parted.