Great Idea! And it even makes sense that I can understand...
For those that money is not an issue, how about placing the sensors all of the cars so you could tell what cars were located in a particular consist? I am not sure of the number of cars/engines that could be stored but is a thought.
If a way to manually program the necessary data into the car to provide the specific information of road name, car type, road number etc.
Sorry if I didn't read back thru all of the previous posts if this was already stated...