Looking for a fun and educational hobby that you can do with your child? Box car racing, commonly referred to as soap box car racing, is the building and driving of home-made cars. These small cars do not contain a motor and simply rely on the power of gravity, reaching speeds up to 30 miles per hour. Soap box cars are capable of holding a driver, typically a child, and are built for the purpose of recreation or racing. The building of the box car itself can be very educational for a child, allowing him or her to enhance their building skills. Logical plans need to be created prior to the building, as box cars require tad bits of basic engineering, art work, and sometimes even electrical work in more advanced cars. Learn about the history of box car racing and how to build your own.