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WOLFSBURG, GERMANY - MARCH 13, 2014:  In this file photo Volkswagen CEO Martin Winterkorn attends the company's annual press conference on March 13, 2014 in Wolfsburg, Germany. Winterkorn announced on September 22, 2015 that he will not step down following the diesel emissions scandal that Volkswagen has admitted could affect up to 11 million VW cars.  (Photo by Sean Gallup/Getty Images)
WOLFSBURG, GERMANY - MARCH 13, 2014:  In this file photo Volkswagen CEO Martin Winterkorn attends the company's annual press conference on March 13, 2014 in Wolfsburg, Germany. Winterkorn announced on September 22, 2015 that he will not step down following the diesel emissions scandal that Volkswagen has admitted could affect up to 11 million VW cars.  (Photo by Sean Gallup/Getty Images)

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    Nardelli: Volkwagen knew it was violating emissions rules

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Nardelli: Volkwagen knew it was violating emissions rules

Former Chrysler CEO Bob Nardelli says Volkswagen CEO Martin Winterkorn knew the emissions scandal would be a "huge distraction" when he decided to resign.

Nardelli: Volkwagen knew it was violating emissions rules

Former Chrysler CEO Bob Nardelli says Volkswagen CEO Martin Winterkorn knew the emissions scandal would be a "huge distraction" when he decided to resign.