NASCAR stands for the National Association for Stock Car Auto Racing, LLC. It is an American auto racing sanctioning and operating company that is best known for stock car racing. NASCAR is the sanctioning body for the No. 1 form of motorsports in the United States and consists of three national series: the NASCAR Cup Series, NASCAR Xfinity Series, and NASCAR Camping World Truck Series. NASCAR Cup Series is the top tier of NASCAR racing and is considered the pinnacle of motorsports in America