CEO of German carmaker Porsche Matthias Mueller...

CEO of German carmaker Porsche Matthias Mueller (R) and President and CEO of Porsche Automobil Holding SE Martin Winterkorn (L) sit in a Porsche 911 before the annual shareholders meeting of Porsche in Stuttgart. German auto manufacturer Volkswagen wants to buy the second half of Porsche’s car-making business before August 2014 when the purchase would be free of tax, Winterkorn said on Monday. REUTERS