By physical dimensions and weight, the title of the world's largest land vehicles belongs to massive surface-mining bucket-wheel excavators, such as Bagger 293 and Bagger 288. Weighing approximately 14,200 metric tons and standing nearly as tall as a 30-story building, these colossal German mining machines operate on massive caterpillar tracks, moving continuous walls of earth and coal at open-pit strip mines with unmatched industrial scale.