In this special episode, Jay Leno explores the world’s largest steam engine—the iconic Union Pacific "Big Boy." This 600ton behemoth, originally built in 1941, is the most powerful steam locomotive ever created. Join Jay as he dives deep into the rich history, mindblowing technology, and sheer power behind this engineering marvel. Thanks to Union Pacific and National Park Foundation for making this possible!

From inside the cab, Jay takes viewers on a onceinalifetime ride, showcasing:

How this 7000horsepower giant revolutionized American transportation
Its connection to Abraham Lincoln and the Golden Spike that united the country
Incredible behindthescenes stories of restoring this 80yearold masterpiece to its former glory
Witness the raw power of steam like never before, and learn how the Big Boy continues to inspire rail fans of all ages. This is more than just a train—it's a living piece of history!

Get ready for some serious horsepower. Don’t miss this episode—it’s Big Boy time!

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