Unic Semi-Remorque Tanker Air BP 1:43

Here the Esterel tractor, inspired by DINKY TOYS models, is with its trailer in the colours of the BP oil company.

The tanker has a folding stand and can be removed from the cab.

Underneath, there is a space for an AA battery, because when a switch is pressed, the lights come on.

The tank can also hold water (from above). This can then be drained through a tap at the bottom of the cabin.

For even more realism, hoses can be connected end to end.  

AA battery required for the lights (not included)