BMW enjoys vast reservoirs of consumer goodwill. How else can you explain the German automaker's ability to flourish despite recent engineering and design faux pas? General Motors would have been a lot further along in its death spiral if it had introduced indigestible shapes, indelicate Bangle butts, interminable run-hard tires, unfathomable iDrive and the ubearable SMG transmission. And so, the M3. Does the new M3 Coupe restore the roundel's rep, or does it signal another misguided attempt to perpetuate the ultimate driving "lifestyle?"