MODEL FEATURES: Fully-assembled Newest horizontal rib front Easily stackable Razor-sharp printing and painting PROTOTYPE AND BACKGROUND INFO: Pullman-Standard dominated the covered hopper car market beginning in the 1950s, thanks to the design success of their PS-2 series of covered hoppers. Designed to carry bulk commodities, such as grain, cement, salt, potash and other mineral products, these cars roamed the rails of North America for decades, attesting to their utilitarian functionality.