21: T-Tops
While General Motors was responsible for creating the removable roof design, a lot of other automakers adopted it. T-Tops were an almost iconic part of the ’80s and sort of a badge of honor if you had a sports car. The problem was that there were a lot of safety problems that T-Tops had. The first and foremost was the structural safety of the car, which was compromised by T-Tops.
Then you had the problem with leaking roofs and even damage to the T-Tops caused by accidental storage. In the end, automakers dropped this concept although GM kept T-Tops as an option on their F-Body cars until the 2002 model year. You can get a 2002 Camaro and still ride around like the ’80s.