Hey people, I've been working on this for the past days, and wanted to show you. What do you think of it? I modelled everything in Wings3D, and made the textures with The Gimp. Rendered with Poser.
(http://www.2dadventure.com/ags/train-promotion-01.jpg)
All of the cars are really low to the ground. Try englarging the wheels. The engine car seems short, I'd add some height to the boxy area to bring the rounded part up. Most trains don't have a front window.
As a feat of modelling, the track is quite impressive, though a lighter wood might look nicer. It might also be fun, since it's a toy trainset, to see the jig-saw joins where the track has been put together.
The shadows aren't raytraced are they? I think the self shadow bias is a little too high, beneath where the track dips to go under the bridge instead of the shadow becoming denser, it disappears.
Finally, the top of the tunnel, the middle carriage and the edge of the track could do with smoothing. With some careful re-lighting though, the model could look really nice!