We were not fighters like them; we were cunning and cowardly, and it was because of our cunning and cowardice, and our inordinate capacity for fear, that we survived in that frightfully hostile environment of the Younger World.
Union Pacific's 4-6-6-4 Challenger steam locomotive #3985 is the largest operating locomotive in the world. Built in July 1943 and still used by UP for occasional excursion throughout the western United States, the 3985 weighs 1,073,900 pounds (537 tons).
The AC6000CW is a 6,000-horsepower (4,500 kW) diesel electric locomotive built by GE Transportation. This locomotive, along with the EMD SD90MAC, is among the most powerful single-engined diesel locomotives in the world. The only locomotive to surpass them is the dual-engine 6,600-horsepower (4,900 kW) EMD DDA40X.