A 1976 sketch of a rear wing/spoiler for the Porsche 928 Targa. This was one of many sketches proposed for the 928 Targa wings and most were bizarre brainstorming ideas and not really serious. One proposal I made had a wing opening up at highspeed showing the car's speed to whoever you were passing. Despite the Targa being aerodynamically vastly superior to the 928 coupe it still required a bib spoiler on the boot edge to achieve that, ensuring a clean airflow break at the rear.