FOR MORE CAR VIDEOS & REVIEWS CHECK OUT www.kbb.com Porsche Cayenne. When Porsche announced it was going to build an SUV a decade ago the idea was scoffed at. Many couldn't imagine a Porsche SUV, but now that vehicle -- the Porsche Cayenne -- is an unqualified success. It takes a practiced eye to discern the changes that mark the second-generation - 2008 Porsche Cayenne model from the outside, but the changes on the inside have enhanced its previously high capabilities on and off road. Power and fuel efficiency are up across the board, and the most powerful 2008 Porsche Cayenne boasts a staggering 500 horsepower. Plus, innovation continues to make the vehicle a technical tour de force. For more new car reviews, interviews and automotive news visit kbb.com today.