Here is my Mongoose designed especially for Halo 3!
He you can see the side of the Mongoose. As you cans ee it is driven by a red spartan. The armour is customized so it is my signature character: Spartan-2442. The Mongoose may be a little big, but unless you wanted a stupid little remote-control jeep, then I guess you should pay attention.
This is a bottom view of the Mongoose. Most of the peices stuck tot he bottom are just for show. I know it lookes like the cat threw-up underneath there, but I'm working on an awesome engine for the bottom! You might also be able to see how the wheels attach, but probably not.
Now, here is a back view. Since, I like adding my own personal touch to my MOCs, I've added a small trunk in the back of the Mongoose. Now, incase you don't know, the driver has to stand up to steer the Mongoose, I really want to fix this.
Here is a small combat between Spartans, and Elites. The Mongoose can be seen in the right corner of the image. It is being driven by a blue spartan.