I guess you're right.
I had no idea the adjusted price of gas was so close to todays. I remember gas being an incidental expense, no big deal, and now it's a chunk out of the "walking around money".
So, it's the government which has driven the improvements. Wouldn't have thought they'd be the big reason.
Huh.
Well, I guess that until it gets way too expensive or the government requires it people will drive the way they do.
Arf