The hybrid version will be able to drive up to 32 miles per hour on electric power only.
Porsche also rolled out its new four-door sedan, the Panamera.
Porsche says if the Cayenne hybrid is successful, the new Panamera could become its next hybrid.
Porsche to debut hybrid SUV
August 31, 2009
The 2010 Cayenne SUV promises 25 percent better fuel economy than its traditional six-cylinder model.
