Legendary American Muscle Cars

3. 1968 Shelby Mustang GT500-KR

This now-classic Mustang came from the factory packed with so much power that those responsible for naming it gave a nod to its dominance in the letter KR, which stand for “King of the Road.” Manufacturers knew that the speeds possible with the GT500’s “Cobra Jet” 335-horsepower, 440 pound-foot torque engine would be astronomical, so it came from the factory with a padded rollbar installed for extra safety. Additional safety measures such as air inlet hood scoops and vented brakes came standard.