Hi Mark, Mike here, one of the best things about N-Trak is you can
model anything you wish. The scene you invision of Hogwarth's express
sounds interesting. Within N-Trak there are several variations of
specs you can adopt. If a long scene with single track is what you are
interested in there is a module type called One-Trak which sounds like
just what you need. Hey John! can you link us to N-Trak.org? there you
can find the specs for One-Trak along with all the other specs. I also
recommend you get the N-Trak newsletter so you can become better
informed as to what is. Mike