Gunboat

Based on the venerable PBR Streetgang combat Lorry Player Vehicle Designs, This is the battleship of the desert!

It has 4! Yes, 4 Car Cannon (2 on each side) 2 Rocket Launcher in front and 2 Heavy Machine Gun in back, you would not be considered a coward if you ran away from this opponent if/when you come up against it in combat.

Depending on the skill NPC gunners it carries, and the damage it WILL do to you if you get too close, you MIGHT be able to loot one of these monstrosities.

Careful maneuvering and the choice of your weapons will decide the battle more than likely.

Use the terrain to your advantage and get this "land-whale" into a slow speed turning fight and concentrate on one armor facing to demoralize their crew before they turn you and your gunners into a puddles of goo that will need to be washed out of their seats.