After a longer period some new things.
At this point I can't get enough information about Tenessee and its station.... therefore the subject is no longer available for a good modelled layout. What I'm looking for now is a subject that can be moddeled in the limits of 7 foot long and 1+ foot deep. I build myself 2 modules, one of them was already build in 2009 and was determined to get a same module with it. But for me it is important that a layout is buid for exhibition purpose and that it can be transported easaly. As I have a sedan there is not much room to get a layout stowed in. So what I did was that I made a shorter second module that fits in the trunk of the car and can be coupled to the first one.
The first one can rest on the back seats. On this picture its the left one. The right one is the new 2012 piece that fits nicely to the older 2009 piece: