Apr 20, 2007 — With growing consensus and concern about global climate change, there's more and more talk in Washington about new laws to cut greenhouse gas emissions. One major question right now is how the government will handle carbon dioxide emissions from vehicles. In federal court in Burlington, Vermont is defending its adoption of strict standards against a suit from a coalition of automakers and state car dealers. Any new regulation is expected to have some financial impact on automakers. And, as Dustin Dwyer reports, the carmakers are looking to share the burden.