Available as a coupe or a convertible, the Shelby possesses an intimidating 540 horsepower, 5.4-liter, V8 engine and six-speed manual transmission. With only one powertrain combination available, this cars reason for being quickly becomes clear. Modern amenities such as air-conditioning, a six-disc CD changer and leather seats for four leave passengers wanting for nothing. Safety is addressed with technical features such as four-wheel Brembo disc brakes, traction control and an assortment of protective airbags. The Shelby GT500 has been redesigned inside and out for 2010. New sheet metal makes the new design appear smaller than the previous model. The engine is up 40 horsepower for 2010, now making a whopping 540-hp.