Our first four-wheel drive vehicle was commissioned by the Japanese Army Automobile School. The prototype, powered by a S6-type engine, was completed in 1935 at the Kobe shipyard of Mitsubishi Heavy Industries Co. Ltd.

In 1936 we created the PX 33 stage-two prototype powered by the X-type military engine. Further improvements were made and four fully-finished vehicles were manufactured, but it didn't go into full production.