American Car and Foundry introduced the 5250 cubic foot version of its "Centerflow" covered hopper in November, 1964. These cars hauled everything from plastics to grain, starches and clays and were owned by railroads, private companies and car leasers alike. Some wore elaborate colorful paint schemes while others were simple gray affairs. Even those however often became more colorful as they became attractive canvases for taggers in the last two decades. With nearly 18,000 similar cars built from 1964 to 1982. These cars were a common site around the country from the 1960s to the 2010s. Several hundred are still in service today, often having served multiple owners. This release includes many colorful cars from multiple eras, including some modern tagged and weathered versions. Models feature round or trough-style roof hatches like the prototypes.