138 km/h on voltage alone! Porsche announces more details on the Cayenne S Hybrid

Porsche says that their engineers have been able to hit speeds as high as 86 miles per hour in the upcoming Cayenne S Hybrid. The gas-electric version of the popular performance SUV is set for launch in 2010 and will feature a performance-enhancing parallel hybrid drive system that fixes the electric motor between the gas engine and transmission.