By 1962, Gene Bordinat and his team were working on the Allegro concept, which looked nothing like the production Mustang. However, it was significant since it established the basic proportions, namely a notchback coupe with a long hood, short rear deck, and compact cabin. Ford built 13 versions of the Allegro, most reflecting a European influence. This isn’t surprising given that the rising popularity of cars from the continent was one reason why Ford built the Mustang.
