I don't deny that I pollute needlessly, in fact, I love to do just that. Every morning when I wake up, a take a barrel of oil and drop it into the ocean at the docs just for some exercise, its great! Anyways, if you think that there isn't any difference in the pollution that a Toyota Prius puts out vs. the Evo, or lets say a Z06, you are kidding yourself. High performance environmentally friendly cars don't really exist. The closest thing to such a thing might be a really high compression naturally aspirated Honda or something. What I really think it comes down to, is how much do you want to pollute? Some people walk to work or ride a bicycle. Some people will drive a Prius. Some people don't give a flying **** and drive an Evo or a Hummer or a Vette or a Viper. And then there are people like me who dump oil in the ocean because they think its funny.