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).
it was invented in 1790's but took about 20 years to get a useful working model. The first steam locomotive prototype was built in 1784 by William Murdoch, who was born in Scotland and worked as an engineer and inventor in Birmingham, England.