Infiniti's "swoopy anger" design language has made it to the M line, and InsideLine got some seat time in the V8-powered, rear-wheel drive, M56 and the six-cylinder, all-wheel-drive M37x.

sport-tuned suspension w/upgraded springs & double piston shock absorbers, sport brakes, 4-wheel active steer, aluminum pedal accents, sport-style steering wheel, sport-style shift knob ...

All-new for 2011, the INFINITI M56 succeeded the long-running M45 sedan. As can be expected from an eight-cylinder powered luxury flagship sedan, the INFINITI M56 exhibited peak luxury style and ...