What planet are you people on? The EPA doesn't care what kind of gas you use, but rather how MUCH gas you use. The EPA tells Ford they must pay X for every car sold, thus Ford sells you a car plus X.. Not rocket science here people. And for anyone who thinks a V6 gets worse millage than a Shelby or GT or Mach then you should get your head examined. 08 GTs may be subject to a GG charge, it's hard to tell since I can't determine if the current GT EPA numbers are based on the old or new system. If they are on the old system, GT's will get slapped with one unless Ford can make it more efficient. The 08 Shelbys will get slapped hardcore with one. Right now a new 350z will get slapped next year with 1300 GG tax.