My entry to the Buggy Challenge and also a pretty great vehicle overall.

v.1.1 changes:
- changed suspension geometry and added more shocks to reduce force on the shocks, making them less likely to break
- added working brakelights
- added working steering wheel
- added working gas and brake pedals
- resized fuel-tank to better fit into the back
- slightly reshaped the structural panels on the outer parts of the body for better looks

It is very large, has a wide and long footprint and a low center of mass, making it almost impossible to flip.
Due to the size and weight, the four 5000 HP engines are really needed. Each wheel is powered by one engine. Acceleration is very good, topspeed varies depending on how many bumps the surface you are driving on has.
The suspension makes riding over dunes almost as smooth as butter and the stacked shocks offer lots of travel. You should still avoid large jumps, as it might break the suspension or explode the vehicle on touchdown.
It has 16 shocks per wheel by the way, 64 total.
Climbing hills with pretty steep angles is also possible due to the high traction and torque. I managed to climb almost all hills on Maywar with it, probably up to 60 or 70 degrees.
Handling is pretty conservative, I couldn't get it much more agressive and I also didn't want to. It's a bit like a cruiser, just for the desert.
Fuel lasts very long, but there's still some space left in the fuel-tank in the back, so you can add more if you want to.

Controls:

Throttle = engine throttle
Brake = brake
Roll = steering
AG1 = headlights and taillights

Feedback and suggestions are appreciated.
Enjoy! :)