NASCAR stands for National Association for Stock Car Auto Racing. It is a popular American auto racing sanctioning and operating company that was founded on February 21, 1948. NASCAR has evolved into one of the largest and most popular motorsports platforms in the world, with races being held mostly in the United States. It features a variety of series, including the premier NASCAR Cup Series, as well as the Xfinity Series, Camping World Truck Series, and others, all of which feature heavily modified stock car racing vehicles.