"For the first time, the government will enact a national limitation on car emissions, President Barack Obama announced today. And those limits will be strict. He's proposing a plan that would require that vehicles get an average of 35.5 miles per gallon by 2016, from the current regulation of 27.5 miles per gallon—resulting in a 30 percent drop in vehicles' carbon emissions.
Calling current rules on vehicle efficiency 'inadequate, uncertain, and in flux,' Obama highlighted the piecemeal nature of current policy, in which the Environmental Protection Agency sets one standard, the Department of Transportation sets another, and California and 13 other states have attempted to set a third. 'The goal is to set one national standard that will increase fuel efficiency,' Obama said."