Yes, there is a section of this forum where members talk prototype and models, but all I was trying to say is that he might get more response if he had a registered version of Trainz.
Regarding model railroad track cleaning, I used to have a rather large model railroad and made my own track cleaning car. All I did was cut a piece of masonite a little wider than the track gauge and glued two roofing nails to it. I then took an old, cheap boxcar and drilled two holes in the bottom of it to match the nails. The masonite rode along on top of the rails with the two nails protruding up through the holes in the boxcar to keep it on the rails. Didn't look like much, but it worked pretty well on keeping 300 ft of track clean. I think I still have it in one of my modeling boxes somewhere.
Mike