I don't think you can top this site. It's thee ecomodding site. Perhaps the most valid argument would be how they cheated with ecomodding on some european testing.
http://ecomodder.com/forum/showthrea...sts-25240.html
If you want to talk to people about ecomodding I think the first thing is whatever mod has to look good. I'm not knocking a sprayfoam grillblock, it's cheap/light/functional but it's going to turn everyone away. Same deal with my first (even worse) packaging tape grillblock. You drive around like that and try to talk to someone and you look like a crazy person.
They also have to care in the slightest degree. I think the mentality is the car gets whatever it gets and it's always less than it's rating. Just drive it like a normal person. Letting it idle to heat it up or cool the interior down, doing 10mph over the speed limit and slamming on the brakes when coming to a stop. I was blown away when a coworker mentioned a couple gas saving techniques after another was talking trash about passing me on the freeway when I was following slower traffic. Some people get at least a little of it.
Kids now don't even want to drive and have their own car. People by large do not want to modify their car. We are the black sheep.