Based on the recently-introduced R-Class sports-tourer (evidently German for station wagon), the 2007 Mercedes-Benz R63 is a performance-tuned six-passenger vehicle that blends the attributes of a sports sedan, a minivan, and an SUV into a single do-it-all package. Mercedes-Benz has been applying the AMG treatment to every model in the lineup, so why not the R-Class wagon? Besides, Mercedes wants to expand the appeal of AMG products in regions of the country where inclement weather is the rule rather than the exception, and the all-wheel drive R63 AMG is a terrific way to capably blend the handling and acceleration of a sport sedan with the comfort and spaciousness of a minivan and the AWD security of an SUV. It is in a class by itself.