This Jordan Spreader is based out of the BNSF yard in Great Falls, Montana. This unit can be used to plow snow, spread ballast and maintain the ditch alongside the railway. A locomotive is used to push it down the track as it does its work.
With the painted on character, I would suspect this machine has a nickname! (Click on the image to see it larger.)
And here is a video clip of a Jordan Spreader in action: