Believe it or not the 99 and 02 Vettes I have driven were actually gas misers. I drove two of them, an auto and a 6 speed, for 189 and about 250 miles on mostly interstate for a dealer. Both of them got over 29 miles per gallon! The engine practically idled at 70MPH+. And when you wanted to pass, it was done before you could think of it! My son told me that a mechanic had a late model one that got 21 or so MPG back and forth to work. I wanted one, but my wife would not buy the gas miser thing, but I finally talked her into letting me get my 05 HCH.