40 Stock Car - PENNSYLVANIA #128781 - HO Scale. Stock Cars, sometimes referred to as a cattle car, are a type of rolling stock used to carry livestock to market. A traditional stock resembles a box car with louvered sides to provide ventilation. Bachmann Stock Cars come in a variety of colors and road names. Each car is fully assembled and features; Highly Detailed Painted Bodies with Precision Graphics (where applicable), 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