This evening after work, I saw Dalton McAdams' post about this trio of new Tier IV GEVO's heading out of KC, so I decided to run out and try to catch it myself. Sure enough, I was able to catch the consecutvely numbered BNSF #3970-3972 heading up the Q CHISBD at two locations south of Topeka. This shot is from where the line heads under US75, just east of Ridgeton, KS.
It's awfully tough to not get excited about new engines on the head end of a train. That's got to be one of THE universal truths of railfanning throughout the years.
