↑ “Chapter 30: Refrigerated Trucks and Trailers”. The Refrigerating Data Book. American Society of Refrigerating Engineers. 1952. tr. 9–237. About 1925, the ice cream industry pioneered the first successful mechanically operated refrigerated trucks, which were operated by methyl chloride condensing units. A generator, driven by a gasoline engine, supplied the power for the compressor motor.
