Gaining the full versatility and capability of Wheelift self-loading heavy load moving transporters is often achieved with interface “pallet.”  A plant manufacturing large transformers would be a good example.   In the case of smaller transformers, two might be on a single pallet where larger units would be carried singularly.  OR!  the pallets may take the for of large scrap tube, molten metal carriers, slag dumper, or coil carriers.  All of these application might be going on simultaneously in a plant with only one or two actual transporters or AGVs.  Interfacing pallets allow each transporter to be multi tasking vehicles. making the return on investment almost instantaneous.