Thanks for the tips so far. I'll try to be more clear about exactly what I'm asking. Let's assume I'm playing a scenario that asks me to connect Albany to Miami, and I begin play with one station existing in each of those places. I'll start in Miami, connecting a nearby town and creating a short run to begin generating revenue. As things begin to develop, I'll turn my attention to the north. However, when I go to buy my first train for up north, it is placed down south with a route similar to my first purchase. Now, even though I can change it's route, or take it out of service completely, there is no way to move that train to Albany until it's connected to Miami. I'd like to begin running trains at both ends as I work towards the final connection of the two cities, but I can't get new trains to "appear" anywhere except where I did my first expansion.