Halo 3 Warthog
Halo 3 warthog, my favorite 'Hog. Features fully rotating turret, seating for two in the cabin, an engine under the hood plus rubber band suspension. No steering (unlike on my halo 4 hog) as it makes it irritating to roll around and play with.
If there is enough interest, I could sell a limited run kit as the build is incredibly strong and sitting at about 270 pieces.