A railcar is a vehicle designed for transporting goods or passengers on a railway track. It can be part of a train and comes in various types, including freight cars for cargo and passenger cars for travelers. Railcars are essential for efficient transportation over long distances, often carrying large quantities of products or people. Railcars are typically made of steel or aluminum to withstand the rigors of travel. They are equipped with wheels that fit onto railway tracks, allowing them to move smoothly. The design and functionality of railcars have evolved over time, improving safety and efficiency in the transportation industry.