At least one prototype of the combat car was built. Production of the car was to be done at the Rahway, New Jersey, factory owned by the American Armament Corporation. The Germans invaded the Netherlands in the spring of 1940 before Tucker could complete the deal, and the Dutch government lost interest, so he completed the prototypes and opted to try to sell the vehicle to the U.S. government. The car is said to have reached 100 mph (161 km/h), far in excess of the design specifications. The U.S. military felt the vehicle was too fast and had already committed to other combat vehicles. The highly mobile, power-operated gun turret featured on the Tucker combat car, which became known as the "Tucker Turret", earned the interest of the U.S. Navy. Harry Miller would later take some of the designs from the Tucker Combat Car to American Bantam, where he was involved in the development of the first Jeep.