"Chairman of the Board of Management, Volkswagen AG. Chairman or Board member of several companies in the Volkswagen Group and Board member of a number of subsidiaries of the Volkswagen Group. Chairman of the Board of Management, Porsche Automobil Holding SE. Member of the following Supervisory Boards: Dr. Ing. h.c. F. Porsche AG, FC Bayern München AG and Salzgitter AG." 
- Chair, Scania
Resources and articles
- Scania Group Martin Winterkorn, organizational web page, accessed July 28, 2012.