The prototype for this model was constructed by the Pacific Car and Foundry Company specifically to transport beer from the breweries to their distribution network. The cars were designed to maintain a constant temperature throughout their entire journey without use of a mechanical refrigeration device, (Road Diesel Power plant...).

The prototypes can be seen in virtually 9 our of 10 freights on today's railroad scene, and they are many times seen in blocks of 6-10 cars at a time.

Car #'s - 782265, 782276, 782283, 783009, 783010, 783013