I can fry my tires as long as I want and cruise at 70mph at about 2200 rpm. 3:55 posi rear and 700r 4 tranny. But sadly, I don't get 22mpg. ( nor does any other member of this forum l'd bet)
Might be easy math, but I know BS when I read it.
I'm a hobbyist. Not a professional. Don't be hatin'!