The model appears to be based on an Italeri European truck. There is some debate, but the 1:1 Dipmobile appeared to be based on a WW2-era six-ton Military truck, likely a White 666. It has also been I'd as a GMC CCKW, though the cab appears closer to what the six-ton rigs used. Either way it is difficult to tell as so much of the truck is obscured. There are no 1:24 WW2 military trucks of these types in kit form, likely why the builder of this model went with a much later-model kit as the base of the model.