WASHINGTON - SEPTEMBER 15:  Environmental Protection Agency Administrator Lisa Jackson (L) and Transportation Secretary Ray LaHood hold a press briefing to announce new fuel economy standards in the near-empty Brady Press Briefing Room at the White House September 15, 2009 in Washington, DC. According to the Department of Transportation, the program would require the overall light-duty vehicle fleet to reach 35.5 miles per gallon in model year 2016. Getty Images logo Getty Images 2 months ago

WASHINGTON - SEPTEMBER 15: Environmental Protection Agency Administrator Lisa Jackson (L) and Transportation Secretary Ray LaHood hold a press briefing to announce new fuel economy standards in the near-empty Brady Press Briefing Room at the White House September 15, 2009 in Washington, DC. According to the Department of Transportation, the program would require the overall light-duty vehicle fleet to reach 35.5 miles per gallon in model year 2016.