If you've ever considered buying a classic American car from the late 1960s through the 1990s, you're likely familiar with the term T-tops. These removable roof panels became an extremely popular option that (literally and figuratively) bridged the gap between a fixed-roof coupe and a convertible. With T-tops, drivers could choose to enjoy the open-air driving experience of a convertible, the comfort and enclosed feel of a fixed roof, and — for models that used transparent T-tops — the ambience of a moonroof. In this article, we'll review the invention of T-tops, how they rose to prominence, and how they faded into obscurity again.