Type 98 20 mm AA Half-Track Vehicle
Encyclopedia
The Type 98 20 mm AA Half-Track Vehicle was an experimental Japanese self-propelled anti-aircraft gun. It was a single 20mm, type 2 gun mounted on a type 98, 4-ton half-track
Half-track
A half-track is a civilian or military vehicle with regular wheels on the front for steering, and caterpillar tracks on the back to propel the vehicle and carry most of the load. The purpose of this combination is to produce a vehicle with the cross-country capabilities of a tank and the handling...

. The vehicle, which was also named the "Ko-Hi", was manufactured by Isuzu
Isuzu
, is a Japanese car, commercial vehicle and heavy truck manufacturing company, headquartered in Tokyo. In 2005, Isuzu became the world's largest manufacturer of medium to heavy duty trucks. It has assembly and manufacturing plants in the Japanese city of Fujisawa, as well as in the prefectures...

.

The Type 98 4-tonners were "high speed" prime movers, capable of 25 mph when loaded. Average transport time was 10 hours road time for 125 miles.
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