Car racing is one of the most popular sports in the world. It involves racing cars and is the most appreciated auto sport in the world. Car racing with single seat cars are designed especially for fast racing. The cars used in such racing uses wheels without covering. Production derived cars are used for racing in touring car racing. The speed differentials will be small with large grids in such car racing. The most economical car racing is production car racing. This has several rules that restrict the cost of racing in such cars. There are various other varieties of car racing called as rallying, targa racing, sports car racing etc.