the Italian E-100, the S80/42. In 1941, Italy realized that their tanks were very weak compared to other tanks such as the M4 Sherman, T-34 and Panther. Then, Ansaldo proposed the idea of a super heavy tank with the name S80/42. The meaning of S is an abbreviation for SuperPesante or in English Super Heavy. for its main armament is Modified Cannone da 135/45 that has longer barrel making it have 971 m/s muzzle velocity and the secondary Armament is 2x 20 mm Breda 35 and 7 cm K10. in November 11, 1941 the chassis was finished but the turret isnt finished yet but in 1942 the turret was finished but not installed to the chassis yet and also the 2nd chassis is finished but this chassis is different like they want to make tank Destroyer with the 2nd Chassis of this tank........