Why the Big Boy 4014 is such a badass train

THE STEAM-DRIVEN locomotive might seem like a relic of bygone days. But tell that to the people who cheered and waved as Union Pacific’s Big Boy 4014 – the largest operational steam locomotive ever – pulled into Ogden, Utah. Its arrival last spring in the US marked the 150-year anniversary of the completion of the first transcontinental railroad.

’s roaring up the ceremonial rails seemed improbable, considering that all eight existing units of the -class steam