Union Pacific DDA40X 6924, leads two C&NW SD40 and Conrail GP40 unit westbound along side I80. I was pacing this train in a 18 wheeler when I took this picture, I held out my camera while driving, across the doghouse, and shot the picture out of the passenger window. I wasn't going to attempt it, but now I'm glad I did. Wasatch Utah. September 12, 1980. Jack D Kuiphoff ? photo