Global Green USA President Matt Petersen presents one of several green cars that can be used to shuttle guests during a news conference before the 79th Annual Academy Awards in Hollywood, California February 21, 2007. The company has lined up 30 cars to shuttle the likes of Leonardo DiCaprio and Davis Guggenheim, director of the Oscar-nominated documentary on global warming "An Inconvenient Truth", to the star-studded ceremony in Hollywood. REUTERS/Gus Ruelas (UNITED STATES)