NdeM 7294 is one of a handful of diesels the road’s San Luis Potosi shops has cobbled together from bits and pieces of wrecked units and sent out to do useful work. Less than a year old on July 6, 1964, it emerges from the Túnel Barrientos near the village of Lecheria with a short freight. Technically an SLP2, the engine has the innards of an ALCO RS-11, but the exterior seems at least part bulldog. Of the several home-mades assembled at SLP, no two – fortunately – look alike.