The rear featured a semifastback with a "flying buttress" sail-panel. An important innovation in the 13th century was the introduction of the flying buttress. It had a sloped nose and flying buttress B-pillars. It was among the first buildings in the world to use the flying buttress. Another Gothic structural feature employed at Durham is the flying buttress. It contained a sloped nose and flying buttress B-pillars. Flying Buttress marketed these works as "graphic albums". The Spider uses the "flying buttress" as used on all convertible McLaren models.