This is a train I've been working on constantly for the past several days. It weighs 2.5 million pounds, but has a lot of thrust and is amazing at coasting for long distances. The front of the train was inspired by the Polar Express, but I added in some of my own features.as well. For now, there is no smoke, but I recently installed the Smoke Trails mod on the PC and I will add in the smoke sometime today. I recommend using this train on an edited flat world as it takes a while to get up to speed. There are the normal controls in the cab, but I also added gauges so you know what is activated. Purple and green are reverser and throttle, brown is locomotive brake, and red is emergency/parking brake. Controls are:

AG1 - trim for reverser, VTOL for throttle
AG2 - throttle to 100% for locomotive brake
AG3 - throttle to 100% for train brake

There are many cameras, all of which are on the locomotive and the rear car. There is a firebox which is active when the train is accelerating. This train is my most advanced and powerful yet. As has been said, I will post it with a running smokestack later today. Have fun with this!