Auto China is being held in Beijing this year. For German premium manufacturers, the Chinese market has become so important that it is presenting models especially conceived for China. Mercedes is showing its new E class in a long version.Audi's electric A6L e-tron is also longer. VW is presenting its two new models, the Magotan and the Phideon, built in and developed for China. Of course Chinese drivers like sports cars, too, so Porsche is on hand with its new 718 Cayman .