Ice reefer innovation By Brian Schmidt | July 26, 2021 | Last updated on August 7, 2025 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Ice reefer innovation Attaching a portable precooling motor (right) with a belt to the shaft extension on the generator enabled the ice-cooled car’s own fans to precool a load while standing still. This helped keep ice-cooled cars cold when loading. Preco photo