When we hear the word Porsche, three adjectives immediately spring to mind: air-cooled, rear-engined, and flat-six.  With the advent of the latest Porsche products, each of these trademark characteristics has come under assault.  Noise and emissions regulations have led to water-cooled engines, the Boxster has its engine in the middle of the chassis, and the upcoming Cayenne will be powered by a V8 engine.  Hey, the Cayenne is even an SUV, for crying out loud!  To those who might wonder what a Porsche truly is, to what the brand really stands for, they should go back in time, just a few years to the last of the “true” Porsches, the previous 911, codenamed 993.