Apparently, Ford experimented with a retractable for the 1961 Thunderbird program, but it surely never came near manufacturing. Neither did a 1960 Skyliner primarily based on that yr's new "aerodynamic" passenger-car design. Styling was one stumbling block: retrac engineering required boxy bodywork, as on the 1957-1959 Fords. But the real motive was the McNamara regime and its flip from marginal marvels...