Kind of hard to remember where all the bits and pieces are from, although wracking my brains I am pretty sure that the third locomotive is 7008, which is a GP50, and if that's the one you mean, then it is a payware RRMods one:
http://rrmods.com/pgp50.shtml
On the offchance that isn't the loco you meant, the lead engine (59) is a payware Virtual Motive Division SD9
http://www.virtual-motive-division.com/?page_id=340
1593- the middle engine - is a payware SD40, again from RRMods:
http://rrmods.com/pimages/nssd4001.jpg
The zooming is a combination of zooming in on the footage in Adobe After Effects and tracking the zoom levels with keyframes, or using the 4 key in Trainz (free camera view) and then moving the view with the mouse whilst recording that with FRAPS, although because doing that puts a compass icon on the shot you get in FRAPS, I had to then zoom and pan the view then crop it in Adobe After Effects to lose the compass icon, which ends up with the shot being about 200 percent zoom. Which means the quality starts to get a bit ropey, and that means using FRAPS on fairly high settings, which accounts for some of the jittering on some sections, as FRAPS uses a lot of RAM.
One or two shots zoom in a bit more than 200 percent, and you can see the quality really noticably dropping because of that. I did consider shaking the viewpoint a bit on the zoomed shots in order to make it look like footage from a chase helicopter and also to mask the drop in quality, but decided against that, although it might have made things a bit more dynamic. I've got an idea for another video in the works which might use that technique.
Anyway, glad you liked it. Thanks for the nice comments, although to be honest I think the audio track great as it is and which is nothing to do with me, adds a lot to the feel of the thing with its mood and subject material about mining. Without that music track, it wouldn't be anywhere near as interesting.
Al