In a time when Fortune 500 companies and four major automakers (GM, Ford, Toyota and DaimlerChrysler) have announced their support for a cap on global warming emissions, it's clear that momentum is shifting.

Did you know that U.S. cars and light trucks emit 333 million tons of carbon dioxide each year? That's more than 20 percent of our nation's global warming pollution! Yet, average fuel efficiency has not changed in 10 years. [In fact it has gone down!]

Car companies can do more and the time for action is now.

Check out our list of facts on cars and global warming. Then, take action in support of national global warming action!

232 million Number of registered vehicles in the U.S. That's almost one per person!

With scientific evidence pouring in, even President Bush last week acknowledged the dangers of global warming in the State of the Union address. The facts are that we need to take action now to prevent the worst effects of global warming: New Orleans-like flooding of coastal cities, chronic drought caused by declining rainfall, and more and more destructive hurricanes.

Global warming is the challenge of our generation, and we owe it to future generations to take action. Your representative has the opportunity to do just that by cosponsoring the Safe Climate Act, a science-based measure that would reduce global warming pollution by 80% over the next half century.

Please sign our Stopping Global Warming Pollution petition, which urges your representative to tackle global warming by cosponsoring the Safe Climate Act. Then, ask your friends and family to help by forwarding this email on to them.