The National Association for Stock Car Auto Racing (NASCAR) is a family-owned and operated business venture that sanctions and governs multiple auto-racing sports events. Bill France, Sr. founded the company in 1948 and his grandson Brian France became their CEO in 2003. NASCAR is motorsport's preeminent stock-car racing organization. The three largest racing-series sanctioned by this company are the Sprint Cup Series, the Xfinity Series, and the Camping World Truck Series.

NASCAR is second only to the National Football League in terms of television viewers and fan numbers.

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