The latest high performance variant of the Ford Mustang bearing the Shelby name has been unveiled at the 2011 LA Motor Show, and it's a beast. Packing a 5.8-liter supercharged V8 producing a headline-grabbing 650 horsepower and 600 lb-ft of torque, Ford claims the new 2013 Ford Shelby GT500 is the most powerful production V8 in the world. While the Mustang has never been the most aerodynamic vehicle on the road, the vehicle's completely reworked drivetrain provides the power to propel it to a top speed of over 200 mph (322 km/h). And as surprising as the grunt under the hood, Ford says the new Shelby GT500 even manages to avoid the United States' Gas Guzzler Tax.