@dragoncar, I was just kidding. My car only get's 25mpg, but I don't have a sanctimonious license plate or try to use it, as @Dragline says.. to "'buy' something that will make you more like how you want others to view you."
I just saw an ad for an Infiniti (Lexus?) that was a hybrid sportscar that got 32mpg and put out 360hp. So should I tip my hat to owners of that car as environmentally conscious?
@jzt83... true, although a 10 year old civic that gets 35mpg could arguably be better since the world didn't have to create another car.
Ed Begley's a big (actual) environmentalist, and at least he can poke fun at himself on the Simpsons - "I prefer a vehicle that doesn't hurt Mother Earth. It's a go-cart, powered by my own sense of self-satisfaction."