Arizona, other states want to get tough on auto emissions (The Arizona Republic) In Arizona, the car drives some of the biggest and costliest challenges facing residents, whether it's transportation or, as it was last week, air pollution and global warming.{b}Half hour to trim fat, emissions [News Source]

Arizona, other states want to get tough on auto emissions (The Arizona Republic) In Arizona, the car drives some of the biggest and costliest challenges facing residents, whether it's transportation or, as it was last week, air pollution and global warming.{b}Half hour to trim fat, emissions [News Source]