1970 Plymouth Superbird muscle car
1970 Plymouth Superbird. The short-lived Plymouth Road Runner Superbird muscle car was a highly modified version of the Plymouth Road Runner with well known graphics and horn. It was the factory’s follow up stock car racing design for the 1970 season to the Dodge Charger Daytona of 1969, and incorporated many engineering changes and modifications garnered from the Daytona’s season in competition on the track.