Back in the 1980s, BMW was all about the compact, performance-oriented 3-Series. They also offered the 5 and 7, but these were greatly outsold by competing Mercedes. Seeking to expand well beyond its driving enthusiast base, BMW made its cars ever more stylish, luxurious, and laden with technology. Despite mixed reactions to the Bangled exteriors and iDrive, sales of the larger sedans grew even faster than their curb weights, and in recent years they have often outsold the E-Class and S-Class. A redesigned 2011 5-Series recently arrived at dealers. With the new car, has BMW further lost the plot, or rediscovered it?