"The Environmental Protection Agency has granted California a Clean Air Act waiver allowing the state to set new standards to control emissions of various pollutants, including greenhouse gases, for passenger vehicles through 2025."

"The waiver, announced in a Federal Register notice signed Dec. 27, allows California to implement its Advanced Clean Cars Program. The program includes regulations to phase in stricter fleet average standards for 2015-2025 model year cars and light-duty trucks to further reduce nitrogen oxide and hydrocarbon emissions, increase engine durability requirements from 120,000 miles to 150,000 miles, and impose new particulate emissions standards on gasoline-powered cars.

California's regulations also set new greenhouse gas emissions limits for 2017-2025 model year cars and light-duty trucks."

Andrew Childers reports for Bloomberg BNA December 31, 2012. [2]