Carroll Shelby’s heart condition ended his racing career, but it never slowed down the second act that followed. From founding Shelby American in 1962 to shaping the Cobra, the Shelby Mustang, and later Dodge’s Viper program under Lee Iacocca and Bob Lutz, Shelby left his fingerprints on two rival American automakers at once. Read on to find out how one man’s name ended up on performance cars from both Ford and Dodge.