M56 Scorpion
The M56 "Scorpion" self-propelled gun is an American unarmored, airmobile self-propelled tank destroyer, which was armed with a 90 mm M54 gun with a simple blast shield, and an unprotected crew compartment. == History == The M56 was manufactured from 1953 to 1959 by the Cadillac Motor Car Division of General Motors for use by US airborne forces, though the vehicle was eventually used by the Spanish Navy Marines, Morocco and South Korea.