Budd–Michelin rubber-tired rail cars which featured innovative and distinctive pneumatic tires. The company claimed that its application of tires on its rail cars afforded both a substantially more cushioned ride and increased the cars' traction by 35%. The design of Michelin's tired wheels included an aluminum safety ring and a flange that were only used in the event of a puncture or other type of tire failure; during normal operation, only the rubber tire made contact with the rail. Inspired by Michelin's success, the Budd Company set its sights on marrying the new rubber rail tires with its shot-welded, stainless-steel carbodies; it had developed
Firestone Natural Rubber Company Firestone Natural Rubber Company Firestone Natural Rubber Company, LLC is a subsidiary of the Bridgestone Americas, Inc. Headquartered in Nashville, TN, the company operates the largest contiguous rubber plantation in the world in Liberia, which first opened in 1926. During the 1920s, the United States access to rubber was restricted by the European colonial powers (Britain and the Netherlands), which held a monopoly in rubber production. Herbert Hoover, then Secretary of Commerce, considered rubber a vital resource due to its usage for car tires and began working with American rubber companies in order to find a rubber source that was