In 1962, Ford debuted the Cougar I concept - the first in a three car series of concepts named the ‘X-cars'. At the time, the first car was named the Cougar 406. This first concept car was meant to illustrate ideas for the next Ford Thunderbird. It featured Mercedes 300 SL-type gullwing doors, and was originally painted in Candy Apple Red. The car was unveiled at the 1962 Chicago Auto Show. It was more of a far-reaching vision than a pre-production preview.
The next year, Ford showed the other two concepts.