This 1970 Mercury Cyclone Spoiler II was built to race the Dodge Daytona and Plymouth Superbird on NASCAR’s fastest tracks, using the same aerodynamic-war engineering, before a rule change ended the entire aero era before it ever competed. Owner Steve Honnell preserves the genuine 1-of-1 car alongside its period jacket and factory stereo, complete with the 429’s unmistakable 12.5:1-compression growl. Watch to hear a NASCAR weapon that never got to fight.