A picture for those who want to see how I doubled up the number of trucks from the PSC medium trucks set. I found it easiest to do this with the Maultier version by just gluing two thick length of sprue to connect the cab to the rear tracks. A couple of spare wheels from the bits box with a sprue axle completes the running gear. The back of the cab is almost hidden by the high cargo bay sides so a simple piece of plasticard cut to size was sufficient. The cargo bed is another sheet of plasticard scribed every 2mm to look like planking.
The driver and his mate were chopped apart and allocated to individual vehicles.