Many moons ago, I blasted MC and a hog across the chasm of the lightbridge area (on Halo level of the original game) over to a small ledge on the opposite wall. You can check out the video right here. A few days ago, Spec1al1st got all three warthogs and MC over to that same spot (in single player mind you), which I can tell you is quite a feat. Excellent job. Drop by his forum thread and take a look.