The NASCAR Grand National Series was a prominent stock car racing series in the United States, serving as a precursor to the current NASCAR Cup Series. Established in 1948, it featured a mix of short tracks and superspeedways, showcasing the skills of various drivers and teams. The series was known for its competitive nature and played a significant role in popularizing stock car racing. In 1971, the series was rebranded as the NASCAR Nationwide Series, and later became known as the NASCAR Xfinity Series. This evolution reflected changes in sponsorship and the growing popularity of the sport, while still maintaining its roots in the tradition of American stock car racing.