The open-topped armoured hull was similar to that of the M3 Scout Car. The requirement resulted in a vehicle designated Scout Car S1 (American). Lieutenant Thomas in his scout car stayed well in front of the column. In later years a similar layout would be used for the Ferret scout car. The T7 was converted back into a scout car and returned to the Army. The post-War BTR-40 was a Soviet copy of the M3A1 Scout Car. The first of these was a small 1-ton-capacity vehicle called the Scout Car. The first acquisition was an unrestored M3A1 Scout Car. Light reconnaissance cars' existed during the Second World War, notably the Daimler Reconnaissance Scout Car. The M3A1 Scout Car was the final development of the series. The M3A1E2 Scout Car was a version with an armored roof. Hungary also developed the PSzH-IV armored personnel carrier from the D-944 PSzH armoured scout car.