Funny man Will Ferrell is more of a consumer when it comes to green goodies. The "Saturday Night Live" alum was one of the first celebs to drive a BMW Hydrogen 7, which is designed to use less gas than most luxury cars. Steven A Henry/WireImage.com - August 29, 2009
Celebs Save the Planet
Check out pics of Hayden Panettiere, Brad Pitt, and more stars who are doing their part.