 The Rosemeyer concept is also highly reminiscent of the "Type 52" design study penned by Dr. Ferdinand Porsche and Dr. Erwin Komenda in the 1930s as a possible road going version of the Silver Arrows, which never saw production.Powered by a large displacement, mid-mounted W16 engine, which develops and featuring Audi's quattro permanent four-wheel drive system, the vehicle promised high performance to match its appearance.It was ultimately deemed unfit for production, both because of extremely high projected production costs, and Audi's unwillingness to create in-house competition with Lamborghini, which Audi had purchased during the 1990s.