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I could see remotely operated couplers... I even have a theory on how they work. Using a muscle wire (wire that either expands or shrinks when current is run through it) it could be attached to the knuckle of a regular old KD coupler. With DCC, you already have voltage on the tracks, at a good current capacity. A tiny optical cell could be on the coupler, and when you point a light pointer at it (IR or laser - laser would be easier to "aim") the coupler uncouples at that location. as soon as you take the light away, the couplers return to normal mode. It would be more difficult on hidden track, unless you wanted DCC decoders every car, and choose which coupler to uncouple... bleach. Just an idea. Rob
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