The Yellow Truck and Coach of GM built this parlor coach as the ultimate in highway travel. The exterior appearance is that of a conventional Z-250 model passenger bus; however, this proto RV offers all the comforts of home with air conditioning, Pullman berths, a kitchen telephone, and lavatory including a shower. It was typically operated by a crew of three. The bus designed initially used by the president of Buick Motor Division. It was later purchased by Anheuser-Busch of Saint Louis, Missouri, where it provided August A. Busch Jr. first class transportation o numerous trips across the country (1941-1946). Inline 6-cylinder, 616 cid, 150 hp., wheelbase: 250," built in Pontiac MI, acquired by Museum in 1969.