Porsche considered alternative body shapes to the classic five-door SUV for the Cayenne early on. Shortly after the launch of the first-generation model in December 2002, three additional variants came in for consideration: a coupé, a version stretched by 20 centimetres and with an additional row of seats, and a convertible.
Source: https://newsroom.porsche.com/e…ff-convertible-29272.html