When BMW introduced its first "crossover" SUV (CUV) in 2000, its marketers called it a "SAV" for "Sports Activity Vehicle." The point was to separate it from other sport utilities of the time and position it as a BMW-appropriate blend of performance and handling with practicality, versatility and all-weather capability. For the most part, it worked, for both the positioning and the vehicle. The original X5 was not the roomiest or most practical of SUVs, but piloting it down a twisty two-lane ribbon of road was a revelation. It drove like a taller version of the 5 Series sedan, which, in many ways, it was. The 2009 version is all of that, and roomier, as well.