biggest: D9 Caterpillar bulldozer, Peterbilt conventional semi, Ford Louisville conv. straight truck, IH 1710 cab-over straight truck,IH Fleetstar conv. straight truck, Massey Ferguson 510 combine, mult. IH and Allis-Chalmers row-crop tractors.
smallest: CRG Rotax TaG kart, Reynard F2000,Lotus...