In the 60s, Chrysler was a player in troop and munitions-experimental transport, with creations like the Marsh Screw Amphibian all-terrain vehicle.
This promotional video showcases the screw-propelled Marsh Screw’s many capabilities, such as torquing sideways in the mud.
Built in conjunction with the Department of Defense, the Marsh Screw could carry a half-ton of troops and supplies on all types of terrain. Powered by a 225ci Chrysler inline six, its two turbine-like screws make a Mississippi marsh looks like a California blacktop, alternating between land and water.
According to Mac’s Motor City Garage, as many as 10 units were thought to have made it into production before the idea was shelved by the U.S. government.