Hey Robert, I was looking at that myself. If I read it right I think it's a controller for a train simulator!!
Right now, that is all they have a available. But, if you look at their web page ( Rail Driver ), they are about to offer modules that will allow it to interface to model railroads. These modules will be offered in DC and DCC models. Take a look.
I want it to control my DCC set. It would be neat if their DCC software displayed a CTC panel and you can throw turnouts with the mouse, and select different engines with the buttons on the bottom of the cab controller.