I found this unique model railroad video on You Tube.
Digital Command Control or "DCC" as it is often called, is an important and beneficial
technology break through in recent years for model railroaders wanting dependable
performance from their miniature model railroad locomotives.
In this video, an inexpensive Life Like H.O Scale 0-4-0T "Dockside steam locomotive
often found in stores like Toys R Us or Hobby Lobby, has been greatly upgraded with a
digital command control sound unit, and now looks and performs even better than ever.
The prototype of this hard working steam locomotive, was one of two built for the
Baltimore & Ohio Railroad, and used for switching the industrial street trackage
of Baltimore Maryland's waterfont district. Unfortunately...none of the prototypes
were saved for preservation. The popular prototype lives on forever in miniature today.