What’s more, GM used the fast back rear end from a discarded Seville design idea for the 1978 Buick Century and Oldsmobile Cutlass. In fact, it was difficult to tell them apart, which is a whole other story. So, it is no surprise, with the 1975 Seville shape being so common on the roads, that the new Seville model, released in 1980, had to shout out its difference, with a bustle back design, that was also the resurrection of a reject from the early 1970s proposals. And that goes a long way to explaining why the Jack Telnack designed 1983 “aero” Thunderbird appeared such a dramatic new design direction and why it, and the Ford Taurus/Mercury Sable twins, were such a success. Buyers were craving something more than Seville look-a-likes, and Ford fulfilled that desire. That said, Bill Mitchell’s Sheer Look wore well on GM’s full sized cars, especially for Chevrolet. It ran virtually unchanged from 1977 to 1990, and still looks crisp today. Not a shabby legacy at all. . The design lasted almost a decade. uising the Seville’s origins. helped Ford with its “aero” design. 41