Heres my train research.....
I'll start off with steam trains, I think I will base most of my designs on steam trains so concepts will look pretty much like the following:
These trains are the evolution of the steam train, they have started to lose the cylindrical chamber and move towards a sleeker, more aerodynamic appearance. Got a few more "macho" trains too, just so we know we can rule things out.
Finally, I think smoke and colour play an important part in the film. I chose images that are strong and have good color display.
I don't think we need feedback for this kinda thing yet as we can sort it out in rendering/post but it might be good to think about between now and then.