Plymouth Roadrunner Superbird
As one of the craziest muscle cars they ever produced, Plymouth offered one of the most recognizable graphics packages they ever presented to the public. To homologate the car for racing, Plymouth built just under 2,000 roadgoing Superbirds, selling them all over America.
They based the car on the Roadrunner, so it came with a 440 V8 as standard and 426 Hemi as the only engine option. However, to make it as aerodynamically efficient as possible, Plymouth installed a nose cone and hideaway headlights as well as an enormous spoiler on the back. And finally, they transformed the rear glass from the standard concave shape to a regular shape, which proved more slippery in wind tunnel testing.