A Antique A1 Steam Powered Car B Vintage C American & European Classic Open D American & European Classic Closed E Pierce-Arrow F Packard G Lincoln through 1973 H Wood Bodied Cars I Race Cars J Derham Coachwork K Unrestored to 1959 L Unrestored 1960-1973 M Mini & Micro Cars N American Production: 1946 to 1954 O American Production: 1955 to 1961 P American production: 1962-1973 Q American Muscle Cars Q1 Corvette R European Japanese and British through 1973 (to be divided based on entry mix) S Model A Ford T Ford Thunderbird U Commercial V Motorcycles W Vintage Trailers X DeTomaso Y Amphicar Z Stationary Engines and Tractors