FILE - In this March 5, 2012 file photo Porsche CEO Matthias Mueller presents the new Boxster during a preview by the Volkswagen Group held prior to the press preview at the 82nd Geneva International Motor Show in Geneva, Switzerland. Volkswagen announced in a news conference after its supervisory board meeting in Wolfsburg, Germany, Friday, Sept. 25, 2015, that Mueller will follow Martin Winterkorn, who resigned this week as CEO of the company. (AP Photo/Frank Augstein, File)