Volkswagen AG CEO Martin Winterkorn said a new Porsche small SUV will be brought to market soon as part of plans to expand the sports car brand's lineup to boost sales.The Porsche Cayenne shares a platform with the VW Touareg and Audi Q7.Besides a small SUV based on the Audi Q5, Porsche could build a new small sports car.Commenting that the new model would be used to increase Porsche’s sales