I vote for gauge on drugs, too. Mine's like that.
I get weird mileage on my '93 SC2. 23mpg around town is about the most
I can expect, but It'll touch 40mpg if I do steady state 70mph for a few
hours, no a/c.
My (somewhat modified) Harley will get 35mpg, no matter what. i can go
100 on the highway all day, putt around town all day, do burnouts all
I'm looking to get an old Nova (early 70's, late 60's). I've heard they
get 18ish with a turbo 350, but I've got access to a cheap THM700
(neener :) so, with overdrive, it might be better...