I think the reason that most Americans don't make various efforts to save the environment is that were so privileged. Most of us can get whatever we want whenever we want it, and we would rather enjoy our privileges than be resourceful. After all, a lot of people would rather have a fancy car and be able to pick up chicks than ride their bike or take the train. That's why a lot people don't think twice before throwing a recyclable bottle in the trash can. I think various environmental groups should try to raise awareness by informing people on how many resources we use versus how other countries use resources. Maybe if people realized that we don't really need to have all the crap we do, people might make more of an effort to preserve the Earth.
(on a random note, I think a guy riding a bike would be much hotter than a guy in a flashy convertible. He probably would be more fit anyways.)