EPA OKs California's Plan to Regulate Emissions

The new standards won't be able to take effect until 2017, according to an agreement between the state and the EPA.

"Today's decision sets the stage for the proposed national vehicle emissions standards that President Obama announced in May: New cars and trucks sold in the U.S. will be required to improve their fuel efficiency gradually over the next seven years, reaching an average of 35.5 miles per gallon by 2016 -- a 40% improvement over the current 25 mpg level. The federal government agrees to adopt California's standards as its own, and the state agrees not to toughen the standards before 2017. Automakers agree to drop lawsuits against California's standards."