An argument between construction workers escalated into a demolition derby-style clash of heavy machinery that left at least two bulldozers flipped over in a street, say police in northern China. In a video taken on Saturday, several bulldozers are seen ramming each other while passenger cars speed away from the cloud of dust. The video shows one driver running unhurt out of his toppled bulldozer, a fast-moving type of vehicle also known as a wheel loader, while another bulldozer tries to lift it back up. [READ MORE]