WASHINGTON - MAY 25: An enlarged label shows fuel economy information of a 2011 Nissan Leaf is displayed during a news conference to announce new fuel economy labels for auto vehicles at the ... more 
WASHINGTON - MAY 25: An enlarged label shows fuel economy information of a 2011 Nissan Leaf is displayed during a news conference to announce new fuel economy labels for auto vehicles at the Department of Transportation May 25, 2011 in Washington, DC. The new labels will provide more fuel efficiency information, including estimated annual fuel costs, savings, and information on vehicles' environmental impact. (Photo by Alex Wong/Getty Images) less 
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Getty Images | Photo By Alex Wong / Getty Images
Wed, May 25, 2011 1:15 PM EDT