|Holt Gas-Electric Tank|
Holt Manufacturing Company
4 cyl. Holt gasoline plus 2 electric motors 90 hp
75mm Vickers mountain howitzer 2x .50 cal M1917 Browning Machine Guns
United States of America
The Holt Gas-Electric Tank was the first prototype tank in the United States, jointly designed by the Holt Manufacturing Company and General Electric. It was not produced because it lacked maneuverability and agility.  The crew number is often given as six, on the assumption there would be two machine gunners, a gunner and loader for the main gun, a driver and a commander.