The CARS Bill, also known as "Cash for Clunkers," allows consumers to trade in their older, polluting gas-guzzlers and get a $3,500 or $4,500 credit toward the purchase of a new, fuel-efficient, clean-burning vehicle. Smartcarguide.com has pulled together all the tables, articles and resources you need to see if you can cash in on this bill. We also have lists of new cars and trucks included in this government program.