What was the name of the first Ford Mustang concept car from 1962?

The first Ford Mustang concept car, built in 1962, was called the Mustang I.

The Mustang I was a lightweight, mid-engine, open two-seat roadster created to explore Ford’s idea for an affordable sports car. It used an aluminum body, independent suspension, rack-and-pinion steering, front disc brakes, and a compact Ford Cardinal V4 engine. Designers included Eugene Bordinat, Roy Lunn, and John Najjar.

Ford completed two examples: a non-running fiberglass mock-up and a functional car. The working prototype made its public debut at the United States Grand Prix in Watkins Glen, New York, on October 7, 1962, with Dan Gurney driving it in a demonstration. Its name was associated with the North American P-51 Mustang fighter.

A common mix-up is the Mustang II concept car. That was a separate, more practical four-seat design from 1963 and was much closer to the production Mustang launched for the 1965 model year. The Mustang I contributed its name and little else to the final car.