At first I thought this might be a stylist's illustration of a 1970's GM proposal of some kind, or a study for a show car for the aluminum industry or something like that . . . but no. Thank heavens for my misspent youth of model car building. This is actually a box illustration of a 1/25-scale plastic model kit from AMT, representing a 1976 AMC Gremlin . . . the picture shows it built as a "Custom GT" version, the parts for which were included in the kit (which could also be built stock).