New Porsche Panamera S e-hybrid is pictured during a media preview day at the Frankfurt Motor Show (IAA) September 11, 2013. The world's biggest auto show is open to the public September 14 -22. ... more 
New Porsche Panamera S e-hybrid is pictured during a media preview day at the Frankfurt Motor Show (IAA) September 11, 2013. The world's biggest auto show is open to the public September 14 -22. REUTERS/Ralph Orowski (GERMANY - Tags: BUSINESS TRANSPORT) less 
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Reuters | Photo By RALPH ORLOWSKI / REUTERS
Wed, Sep 11, 2013 8:23 AM EDT