The Porsche Cayenne's secondary controls are relatively easy to locate and use, but the stereo and climate controls – those used most often – take some study and acclimation. Glance at the Cayenne's center stack with the intention of changing a radio station, adjusting cabin temperature, or programming the navigation system and the daunting array of small buttons with even smaller and sometimes enigmatic markings is enough to make anyone decide that listening to James Blunt, sweating on leather in cotton chinos, or being lost in a graffiti-ravaged neighborhood isn't so bad after all.