Everyone loves the replay feature in Halo 3. Everyone, except probably Bungie -- especially in cases like this video. This "new vehicle" can be found on the level with the first boss battle with the Scarab. Get two people into the dumpster, tip it over, then both players need to jump at the same time and watch as the dumpster becomes airborne. You can even steer the dumpster!
Awesome glitch, now my only question: How does someone stumble upon such a crazy glitch? This does gives a whole new meaning to dumpster diving! Am I right?!