 The meat was packed tightly at the bottom of the car to keep the center of gravity low and to prevent the cargo from shifting.Chase's design proved to be a practical solution to providing temperature-controlled carriage of dressed meats, and allowed Swift & Company to ship their products all over the United States, and even internationally, and in doing so radically altered the meat business.Swift's attempts to sell this design to the major railroads were unanimously rebuffed as the companies feared that they would jeopardize their considerable investments in stock cars and animal pens if refrigerated meat transport gained wide acceptance.