There's a very funny episode of "South Park" called "Smug Alert!" which pokes fun at drivers of hybrid cars. In it, Kyle's dad buys a hybrid and attempts to convince the entire town to go green. He ends up creating environmental havoc. As smog drops, smug rises. "Smug" was a new emission made up of "self-satisfied garbage", and South Park ended up with the second highest levels of smug in the nation...behind San Francisco.
Here's "South Park" creators Trey Parker and Matt Stone talking about the Hollywood hypocrisy which motivated them(Warning: they drop f-bombs).
Today, Chevy begins production of its much-anticipated (mostly) electric Volt.