The AB 40 armoured automobile ended up being devised the Italian Royal Army into the belated 1930s, to restore the old Lancia models. The automobile had been innovative in those days, being a four-wheel drive with split suspensions and two driving roles. The armoured vehicle had been fitted with two 8mm machine guns within the turret and another in rear for the hull, but was indeed only built in tiny numbers for assessment purposes, as development of the greater advanced AB 41 was indeed underway. Some of the models had been became tracked patrol vehicles because tires could possibly be replaced with rail wheels and relative stopping systems. Many of these automobiles had been employed in Yugoslavia by the Italian forces and, later on, by the Germans.