When in 1998 Porsche announced it was going to build an SUV, the proclamation was greeted with scoffs and pure horror. How could Porsche turn its back on its heritage by introducing a lumbering sport utility vehicle, many asked. But days after the vehicle, called Cayenne, came to market in 2002, it was clearly a success. It didn't so much change Porsche's basic character as extend it, because the Cayenne quickly became renowned as the sports car of the SUV set—a vehicle with off-road credentials that was also a fulfilling to drive. Now the second generation of the Cayenne has arrived, and though it takes a practiced eye to discern the changes from the outside, the changes on the inside have enhanced its previously high capabilities. For example, power and fuel efficiency are both up across the board.