Ford will end production of the GT after the 2022 model year, but its design team isn't out of ideas yet. The latest (and probably last) Heritage Edition variant has been unveiled as a tribute to five prototypes built in 1964. Instead of honoring a race car, like it has done with previous Heritage Edition models, Ford chose to shine the spotlight on one of the test mules that paved the way for the GT40. The company launched the program in 1963, and it presented the first prototype less than a year later at the 1964 edition of the New York Auto Show. Development work continued, and four additional prototypes were built to test various aspects of the car, including crashworthiness. Ford's diligence paid off: It famously beat Ferrari in a one-two-three finish at the 1966 24 Hours of Le Mans.