Freight cars are specialized railway vehicles designed to transport goods and materials across distances. They come in various types, including boxcars for general cargo, flatcars for heavy loads, and tank cars for liquids. Each type is built to accommodate specific kinds of freight, ensuring safe and efficient transport. These cars are an essential part of the railroad system, contributing to the movement of products like automobiles, grain, and construction materials. By using freight cars, companies can move large quantities of goods over long distances, making them a vital component of the supply chain.