[roflwaffle]

Dave mentioned that most of us had taken this beyond what was economical and I'm curious if that's the case, so if you have the time, feel free to post up a few things. I'm going to restrict this to highway driving since city driving is really hard to compare and in most cases is probably economically worthwhile to drive efficiently because there's such a small difference in average speeds (mostly dictated by lights and so on).

So...
-What is the difference in highway mileage between what you get driving efficiently and what you get driving like everyone else?

-What is the difference in average highway speed between what you get driving efficiently and what you get driving like everyone else?

-How much do you like driving more than you like working, or vice versa?

For instance in my Camry I get ~25mpg@70mph average highway speed and ~35mpg@55mph average highway speed. This means that the cost of going faster with those two speeds is ~$13.5/hour or ~$15.5/hour adjusted for taxes. Since I like driving about three times more than I like working, I'd say I would need to be getting ~$45+/hour to make it worthwhile to drive faster. Even if I was driving something more fuel efficient that managed ~70mpg@55mph and ~45mpg@55mph I would still need to make ~$20+/hour to make it worthwhile.

Given how most people drive I can only assume they like working a lot more than they like driving, but most people here aren't the average driver, so what kind of economics are you looking at?