To make a long story short, they don’t work. None of them work at all. In fact, as the laws of thermo-dynamics dictate, you actually lose fuel economy running any of these devices. I know the man and the oil companies are picking our corpses clean but you won’t find any relief, only more scams. If increasing fuel economy is really what you are after don’t look to commercial solutions for help. Buy a smaller car, rip out the seats, or take your contraband out of the door panels.
Gas Saving Gismos Debunked
About the Author
A complete and total jerk. His disregard and distaste for the establishment and everything it has established, provides an un-pandering and brutally honest look at stuff that happens. 
