Overview: Union Pacific's refrigeration train is simply the coolest… On its cross-country trip from Wallula, Washington, to Schenectady, New York, it employs hi-tech mobile refrigeration technology to keep its produce intact and fresh. Even the railcars themselves are loaded inside a cooled facility so as not to break the cold chain for this delicate cargo. Also in this episode: how trains and trucks battled for business in the 1950s.