The Harley-Davidson Archives recently acquired a rare racing motorcycle. The 1934 CAC model, sometimes known as a “cinder track” racer, was developed with assistance from legendary racer Joe Petrali. Cinder tracks or “speedways” were a popular form of racing in the 1930s. The CAC was powered by a 500cc engine, based on a street motorcycle of the era. It is believed that about 20 CACs were ever built. The bike will be put on display in the Clubs and Competition gallery later this year.