Business_Finance

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Following the lead of two of its rental car competitors, Enterprise and Hertz, both of which already offer car-sharing services, Avis announced Wednesday that is buying Zipcar for about $491 million. (Associated Press)

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A trader works on the floor at the New York Stock Exchange in New York on Jan. 2, 2013. (Associated Press)

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Speaker of the House John Boehner, R-Ohio, walks with House Ways and Means Committee Chairman Dave Camp, R-Mich., following a closed-door GOP meeting on the "fiscal cliff" bill. It passed the Senate on Monday night and the House on Tuesday, Jan. 1, 2013. (AP Photo/J. Scott Applewhite)

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President Obama and Vice President Biden arrive Jan. 1, 2013, to make a statement regarding the passage of the fiscal cliff bill in the Brady Press Briefing Room at the White House in Washington. (Associated Press)

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**FILE** Zipcar Chairman and CEO Scott Griffith stands April 14, 2011, with a Zipcar Mini-Cooper before the opening bell at the NASDAQ Market Site in New York. (Associated Press/Zipcar.com, Craig Ruttle)

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President Obama smiles as he arrives in the Brady Press Briefing Room at the White House in Washington to make a statement regarding the passage of the "fiscal cliff" bill on Tuesday, Jan. 1, 2013. (AP Photo/Charles Dharapak)

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A Filipino trader blows a horn during the first day of trading at Philippine Stock Exchange at the financial district of Makati, south of Manila, Philippines on Wednesday, Jan. 2, 2013. Stock markets in Asia registered relief Wednesday over the U.S. congressional vote to stop hundreds of billions of dollars in automatic tax increases and spending cuts that risked plunging the world's biggest economy into recession. (AP Photo/Aaron Favila)

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Late on New Year's Day, Speaker of the House John A. Boehner, Ohio Republican, walks past reporters after a closed-door meeting meeting of House Republicans as the "fiscal cliff" bill passed by the Senate last night waits for a vote in the GOP-controlled House, at the Capitol, Jan. 1, 2013. (AP Photo/J. Scott Applewhite)