My wife and I stopped by the sales trailer for the new Potomac Yards real estate development to see what was up. We live next to it.
I was surprised to see that they had an operating T Scale model train to accompany their sales model. The sales rep demonstrated the layout to us. The layout shows the three tracks of the CSX mainlines. The center track is wired with some type of auto reverse system that appears to uses magnets to reverse the train. It was pretty cool. Here are some photos I took with my iPhone.
They also had what appeared to be an N Scale model showing the the first phase of the development. These models are laser cut and show each house as they plan to build it. As they move to new sections, they will model each house as it will be built. That is more than 300 individual models.
AW standing on top of our house. They had a grealy enlarged aerial photo of the area on the floor.
These are shots of the "N" Scale model
This is the T Scale Model