A Rare EMD SD45X 5740 was one of only 7 of this model that were built. This unit was the EMD demo. It was In Williams with test cars to test the New GP40X unit that was on the other end of the ... (more)

SD45X 5740 leads an EMD test train at the Depot In Williams Arizona in the early morning

Maybe it was an SD55. In any case EMDs test string was reportedly working on the Saluda grade which was still open then. These units varied in many features over the years and were iinteresting ... (more)