10 Unusual Locomotives Engineers Said Were Impossible

10 Unusual Locomotives Engineers Said Were Impossible The rule of locomotive engineering said that power had to be controlled, that form had to follow function, and that a machine too radical to maintain would never survive long enough to matter. These locomotives demolished that assumption. One moved its cab to the wrong end of the machine and ran that way for half a century. Another borrowed its engine from a warship. A third burned fuel so corrosive it destroyed itself from the inside. These were not engineering accidents. They were calculated bets against received wisdom. Here are ten unusual locomotives engineers said were impossible.