The man was a legend in more ways than one. Carroll Shelby, the legendary auto racer and car designer who built the fabled Shelby Cobra sports car and injected testosterone into Ford’s Mustang and Chrysler’s Viper, has died. He was 89. Shelby’s company, Carroll Shelby International, said Friday that Shelby died a day earlier at a Dallas hospital. He had received a heart transplant in 1990 and a kidney transplant