The most significant member of American Motors’ Project IV of 1966 was the AMX concept car. Displayed as a “design experiment,” the two-passenger sports model featured a cantilever-type top and no front A-pillars. An old feature was revived with the “Ramble Seat” with two more passengers seated in the trunk area. The lid flipped up for access and the rear window rose as a windbreak. Mounted on a 98-inch wheelbase and 179 inches long, the AMX prototype closely previewed the production model that was introduced at the 1968 Chicago Auto Show.