@VelocityStop : nice one, it looks slightly tilt-shifted. Might just be me :P Why the ND filter?
Thanks, no tilts or shifts... it was cropped some and the front of the train was sharpened some (kind of a weird angle, too). The ND filter was on to keep the aperture wide open and shutter speed lower to create more of a look of movement on some shots. It probably did not need to be on in that particular shot due to it being cloudy and the woods creating extra shade (I had it set on auto-ISO so the end result was just a higher ISO because of the ND filter). Taking pictures of trains involves a lot of bailing out of the car, quickly setting up a shot, getting the shot, and then diving back in the car to catch up with and get ahead of the train for the next one. So, once the filter was on, it stayed on. The following shot actually made use of the filter (but not as much blur as I wanted, so I may use my 50 1.8D with two ND filters next time).
D7000 with Sigma 17-70mm f/2.8-4 OS HSM @ 24mm, f/3, 1/100, ISO 100
ND 1.2 filter
edited in Lightroom