Porsche Automobil Holding SE is a German holding company engaged in the car manufacture industry. The Company's core products are sports cars and all-terrain vehicles. The Porsche sports car range includes the Boxster, the Cayman, the 911 and the Carrera GT. The Boxster and the Boxster S are contemporary reinterpretations of the Company's original roadsters, the 356/1 and the 550 Spyder. There are several varieties of the 911, representing the model's evolution. The Carrera GT has the race-derived chassis construction and minimum weight. The Company's all-terrain models, Cayenne, Cayenne S, Cayenne Turbo and Cayenne Turbo S are balanced, four-wheel drive vehicles for on-road and off-road use. Porsche Automobil Holding SE also offers financing services, spare parts and accessories for new and classic models, as well as an approved used car service. As of November 23, 2009, Porsche Automobil Holding SE owned a 50.76% stake in Volkswagen AG.