Put a little life in your HO Scale freight trains with this series of sound-equipped stock cars from Broadway Limited. Each ready-to-run model comes with on-board electronics, operated by a motion detector, which stays on as long as there is power on the track. The stock cars can be used on DC or DCC systems and are based on the Pennsylvania K7A design, which was similar to stock cars used by many roads. A variety of animal noises are available as noted.