FILE - In this April 14, 2011 file photo provided by Zipcar.com, Zipcar Chairman and CEO Scott Griffith stands with a Zipcar Mini-Cooper before the opening bell at the NASDAQ Market

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FILE - In this April 14, 2011 file photo provided by Zipcar.com, Zipcar Chairman and CEO Scott Griffith stands with a Zipcar Mini-Cooper before the opening bell at the NASDAQ Market Site in New York. Avis is buying Zipcar for $491.2 million, expanding its offerings from traditional car rentals to car sharing services. The boards of both companies unanimously approved the buyout. (AP Photo/Zipcar.com, Craig Ruttle, File) less 

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Associated Press
Wed, Jan 2, 2013 11:53 PM EST