Lending credence to the concept of a sport-tourer, the 2007 Mercedes-Benz R63 AMG is equipped with a modified version of the company’s 4Matic all-wheel-drive system. Under the hood revs a hand-built, 6.3-liter V8 engine making 503 horsepower and 465 lb.-ft. of torque, capable of accelerating the R63 from rest to 60 mph in just five seconds. A seven-speed automatic transmission with shift buttons on the steering wheel channels the grunt to all four wheels, and the driver can choose one of three transmission modes depending on the kind of driving she’s performing: sport (S), comfort (C), or manual (M). AMG’s wizards have also modified the 2007 Mercedes-Benz R63 AMG’s suspension, adding sport-tuned shocks to the standard Airmatic system and a uniquely configured adaptive damping system (ADS). Brakes are upsized, vented and perforated, and the R63 rolls on polished 19-inch rims shod with 295/45 performance tires.