An Unsung Hero The 2 1/2 ton cargo truck supported the lifeline of the Allied armies in WWII and Korea, carrying supplies and soldiers to the front. Over 800,000 were built during WWII, with many variations produced for various tasks. The most common flatbed cargo truck had an off-road cargo capacity of 2 1/2 tons and a paved road capacity of 4 tons. With its bulletproof reliability and 72km/hr top speed, it ferried much-needed supplies, medicines, food, and fuel to help the Allies win the war.