The Obama administration today released details of its national suite of auto standards that would mandate increased fuel economy and impose the first-ever greenhouse gas standard on the nation's cars and trucks. The proposals are a joint effort between U.S. EPA and the Transportation Department and would go into effect with model year 2012. The standards would push corporate average fuel economy, or CAFE, standards to a fleetwide average of 35.5 miles per gallon by 2016, four years ahead of the schedule Congress laid out in a 2007 energy law. The carbon dioxide limit under the plan -- which will apply to passenger cars, light-duty trucks and medium-duty passenger vehicles -- would reach an average of 250 grams per mile per vehicle in 2016. Go to story #1