This MOC is based in the small French buggy AXR 400.
The final size is 30x18x15 studs.
It uses a PF M motor for steering, with auto-center.
For drive it has a PF L motor, it it can use a M if you want.
You can change easily the gear ratio between: 1:3(8kph), 1:1.67(4.5kph) or 1:1(2.7kph).
The suspension is independent in the front axle, and a pendular axle in the back.