UP 6936 is one of 47 DDA40X produced between 1969 and 1971 by EMD. It is the largest diesel locomotive ever built, weighing in at roughly 270 tons. It has four axles on each of its two trucks and has two prime movers. Alas, after just over 50 years of UP ownership, it is now being donated to the Railroading Heritage of Midwest America museum in Silvas, IL.
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