A third-generation AMX concept car, the AMX/3, debuted at the February 1970 Chicago Auto Show. Engine-less and fashioned in fiberglass, the original AMX/3 prototype was a "push-mobile" show car only. The functional steel prototypes introduced at the April 1970 New York Auto Show were constructed by Giotto Bizzarrini, Salvatore Diomante and Giorgetto Giugiaro of Italdesign.