This futuristic armored car was presented to the US Army in april 1941 as "trackless tank". Nobody understood its APC possibilities, and it was not accepted, because it looked too expensive as armored car, and not a good tank without tracks... DVX
The ‘Trackless Tank’ was the forerunner to the T13 armoured car and was to be developed into the T7 3-Inch Gun Motor Carriage as well as the T39 105mm Howitzer Motor Carriage.
It was manufactured by the Trackless Tank Corporation of New York, and submitted to the Ordnance Department, U.S. Army, for inspection. Preliminary tests indicate that the tank may be adaptable for reconnaissance purposes, possibly replacing scout cars. Tank weighs 10 tons. During initial, brief tests at Fort Knox, Kentucky, it made 45 miles an hour across rough country, with a 37 mm gun and two machine guns mounted in its turret; its designer says it can travel 85 mph on level ground. It is powered by a 250 horsepower diesel engine, and carries 1/2-inch armor. Tentative plans of the Army call for a redesign of the superstructure for better arming of the tank.
None entered service due to problems with the drive train and only limited numbers of the T13 were built.