Formally presented through the opening of FIATs Mirafiori plant in-may 1939, the AB 40 was, during those times, something of a cutting-edge automobile. Because of revolutionary solutions specially twin drive and further wheels mounted as basic to greatly help conquer obstacles, it had been a match for any worldwide rival in identical class. The AB 41 variation, introduced in 1941, included some improvements, yet its primary gun (a 20 mm Breda 35 cannon) stayed exactly the same.