While riding my bike earlier today, I came up with the greatest idea. I figured out a way to make a model train ferry! What you would need to do is build a ferry (a boat) around a train engine (trust me on this, I'm not crazy!) Then, under the water level, build track for that scale, so the boast will ride on the rails and look like it's floating. When you have that all set, build the track for a scale 1 size lower than that of the boat's engine, like if the boat used an HO engine, than the track on the boat would be N. You're probably thinking how the trains on top will get electricity. Well, they aren't moving while the boat's moving, so they don't need electricity. When the boat is "docked", a little piece is sticking out on the boat. This piece has to side to it. The sides have plating on it to supply electricity. When the boat docks, the little "jigs" slide into a port that connects to it and supplies it power. This also aligns the track. Now you have an operating ferry! In the picture, both sides of the boat (the red thing with "track" written on it) will have the prongs sticking out. The yeller thing is the dock, and the blue thing is the fling pig. Not really, it's the water.