Did someone build a time machine? The last few years have seen an American horsepower arms race the likes of which hasn't been seen since our fathers were kids, and the 2013 Ford Shelby GT500 ($TBA) is the latest salvo. Powered by a massive 5.8L supercharged V8, the GT500 boasts 650 horsepower and 600 lb. ft. of torque, making it the most powerful production V8 in the world and enabling speeds of over 200 mph. Other features include a carbon fiber driveshaft, a beefier clutch, transmission, and axle, Brembo brakes, a launch control system to keep that power flowing to the pavement, and Goodyear Eagle F1 SuperCar G: 2 tires. Your move, Chevy.