The basic method can be performed by two persons (Person A and Person B) working together. First, set Scorpions as the Primary Heavy Vehicle in Halo 2's multiplayer map Coagulation. Then, have Person A take a Scorpion and drive up the rock near the Shotgun spawn until the Scorpion flips over, forcibly ejecting A from the driver's seat. Person B should use another Scorpion to drive up Person A's flipped Scorpion, such that B's Scorpion is directly on top of A's.