Find the Video of this MOC on Youtube 
https://youtu.be/LmCHvtSaUqY

This MOC is inspired by the Kress 200C, a caul hauler of 140t with a payload of 240t with two main particularity:
Dumping is done by a central double door
Front wheels can rotate up to 90° for short turn.
You can find the technical brochure of the series III here:
http://www.kresscarrier.com/Kressweb/Brochures/200CIII_DetailedBrochure.pdf
and the testing of the prototype here on youtube :
https://www.youtube.com/watch?v=CopnKHOGJK4
 
The aim of this MOC was to test the use of two SBricks controller simultaneously and test LED flashing possibility (I love LEDs), there is so:
FWD SBrick:
2 PF-Servo for the steering: they are mounted verticaly on a mini turntable. Wheel axles have a suspension each.
1 PF-M for the oppening of the haul (synchronized with AFT PF-M)
1 PF-LED for the strobe light
2 PF-LED for the headlights (synchronized with rear lights)
AFT SBrick:
1 PF-XL for the propulsion. Rear axle is mounted on a steering ball joint and suspended.
1 PF-M for the oppening of the haul (synchronized with FWD PF-M)
1 PF-LED for the strobe light
1 PF-LED for the rear lights (synchronized with headlights)
 
Wheels are not exactly at the right dimension, higher ones (85x20mm) would have been better.