Old-Time Water Tank Car - GREAT NORTHERN - N Scale. Old-Time Water Tank Cars were used to carry water long distances during the 1800's. Bachmann's Old-Time Water Tank Cars come in a variety of colors and road names and are the perfect addition for your Old-Time Steam Railroad Layout. Each car is fully assembled and features; Highly Detailed Painted Bodies with separately Applied Brake Wheel, Precision Printing, Blackened Machined Metal Wheels with RP 25 Contours, Magnetically Operated E-Z Mate® Couplers, Non-magnetic Blackened Brass Axles with Needle-point Bearings, Celcon Trucks, and Added Weight for Optimum Tracking Performance.