17. Plymouth Roadrunner Superbird
The Superbird has one of the most recognizable designs ever presented. To homologate the car for racing, Plymouth built just under 2,000 road-going Superbirds. Based the car on the Roadrunner, they only offered it for one year in 1970.
It came with the 440 V8 as standard and 426 Hemi as the only engine option. To make it as aerodynamically efficient as they could, Plymouth installed a nose cone, hideaway headlights and an enormous spoiler on the back. They also transformed the rear glass from the standard concave shape to a regular design, which was more slippery in wind tunnel testing.