Union Pacific unveils first mother-slug set of hybrid switchers (with video) - Trains
OMAHA, Neb. — Union Pacific today took the wraps of its first mother-slug set of hybrid switching locomotives that can run on diesel fuel or batteries. The units, SD40-2 slug set UPY No. 409 and UPY No. 309, were converted at the railroad’s Jenks Locomotive Shop in North Little Rock, Ark., and...
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