Big, Bigger, BIGGEST 3 MASSIVE MACHINES that move (and work ) (Worlds biggest, largest ever built ) NASA CRAWLERTRANSPORTERS: The NASA crawlertransporters are the largest land transport vehicles in the world. Each crawler weighs about 2. 7 million kilograms or about 6 million pounds. They are 40 meters or 131 feet long and 35 meters or 114 feet wide. br, br,
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