Taller than the Statue of Liberty and heavier than the Eiffel Tower, this German mining machine is one of the largest land vehicles on Earth. In HBO's futuristic Westworld, a bucket-wheel excavator like this claws out an entire city. In reality, these diggers work in open-pit mines. The excavator pictured here, called Bagger 288, uses its revolving wheel of buckets as a shovel to continually shift 8.5 million cubic feet of dirt a day. Once it reaches a seam of brown coal, or lignite, it can harvest 265,000 tons of fuel a day. And the crew this behemoth requires? A mere three to four people.