If you want to get the ore, dirt out, or move a mountain, it's what you need.
Bagger 288 earth digger has 311 feet hight, 705 feet width and weighs 45,500 tons. Bagger 288 removes 100,000 cubic yards per day.
Largest vehicle in the World Cost: $100 million
It Took 5 years to design and manufacture plus another 5 years to assemble
Maximum speed 1/3 mile per hour
see also largest airplane in world