WOLFSBURG, GERMANY - SEPTEMBER 25:  Matthias Mueller, head of German automaker Porsche, speaks to the media after the governing board of Volkswagen announced he will succeed former Volkswagen CEO Martin Winterkorn on September 25, 2015 in Wolfsburg, Germany. Winterkorn resigned yesterday following charges by the U.S. Environmental Protection Agency that Volkswagen had installed software into its diesel cars sold in the U.S. that manipulates emissions test results. Volkswagen has since admitted that 11 million cars sold worldwide contain the software. The company faces up to USD 18 billion in fines in the U.S. and prosecutors in both the U.S. and Germany have launched investigations.  (Photo by Alexander Koerner/Getty Images)