The Plymouth Superbird was a 1970 aero car developed by Plymouth for that year’s NASCAR season. Motivated by the Dodge Charger Daytona, Plymouth built a modified version of its Road Runner car. The 1970 Plymouth Superbird featured aerodynamic add-ons to its Road Runner model with front fenders taken from the 1970 Dodge Coronet. The Superbird’s nose extended 19 inches more than the base of the Road Runner.
The Superbird had an extended metal nosecone in the front, while the rear featured large wings for racing. Plymouth made 1,935 Superbirds for the public with three variations, including the Super Commando 440, the 440 Six Pack and the dual-quad 426 Hemi. With the large-sized “Plymouth” stickers on the rear, the car also featured pictures of the cartoon character Road Runner. The Superbird’s vinyl top was designed to hide the welding seams left to adjust the flush-mounted rear window.
With competitors such as the Ford Torino Talladega, Plymouth wanted to make a big impression on the NASCAR track with the Superbird. The company also wanted back Richard Petty, who had left its NASCAR racing team for Ford’s. While successful on the racing track, the Plymouth Superbird’s unconventional look failed to generate consumers' interest. With waning demand from the public, production of the Superbird lasted only one year.