The AB 40 armoured vehicle ended up being developed the Italian Royal Army into the late 1930s, to alter the old Lancia models. The auto ended up being revolutionary at the time, being a four-wheel drive with split suspensions and two driving roles. The armoured automobile wound up being fitted with two 8mm unit weapons in to the turret and another in to the straight back about the hull, but wound up being just built-in small numbers for evaluation purposes, as growth of the more number of advanced level AB 41 was already underway. A few of the models were changed into tracked patrol automobiles whilst the tires could possibly be changed with train tires and general stopping systems. Several automobiles were present Yugoslavia by the Italian forces and, later on, by the Germans.