BNSF 8050, photographed passing through the town of Tehachapi, California, just after sunset.
8050 is a General Electric ES44C4 4,400 HP diesel-electric locomotive. BNSF was the launch customer for this latest (2014) model in GE's "Evolution Series."
For more information about this type of locomotive, see:
en.wikipedia.org/wiki/GE_Evolution_Series#ES44C4