Hey David,
I played with the sensor track for about a half hour at the customer service open house. The track can be programmed to make certain engines perform certain actions when it rolls across the track. One example is that I can program my Legacy U30C when it rolls across the track to turn on the bell and blow a crossing sequence on the horn by itself. You can also "teach" the track a certain action to perform. You can set the track to record much like the Legacy base and have an engine stop, backup, open couplers, etc. I believe anything that you can record on the Cab-2 can be recorded on the track and then activated when the engine rolls across the track. Overall a very neat little piece of equipment.
