Owned by the Porsche factory, and resident at the Porsche musem, this 550 is the first race car EVER to wear sponsorship. It ran in the 1954 Carrera Panamericana in Mexico. Its chassis number is 550-04. A truly historic and incredibly valuable car. it runs the famous Porsche 4 cam 1.5 engine. The cams are gear-driven in an incredibly complex arrangement. The gear train looks like a watch. Beautiful.