Exhaust flows out of the tailpipe of a vehicle at “Mufflers 4 Less”, 11 July 2007 in Miami, Florida. Florida Governor Charlie Crist plans on adopting California’s tough car-pollution standards for reducing greenhouse gases under executive orders he plans to sign 13 July in Miami. Joe Raedle/Getty Images/AFP =FOR NEWSPAPER, INTERNET, TELCOS AND TELEVISION USE ONLY=