Mongoose on last level
On the last level of halo 3 you will get a warthog, drive the warthog to the end of the path where the edge is and there will be a small path to the left. O on the psmall path and you will come to a mongoose.(Warning:The mongoose is easily flipped but is very fast).
More tricks, tips and cheats for this game are right here - Halo 3 cheats
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