The National Association for Stock Car Auto Racing was founded by Bill France Sr. in 1947. As of 2014, NASCAR is the largest sanctioning body of stock car racing in the United States. The organization sanctions over 1500 races at over 100 tracks in 39 states. NASCAR is second to the National Football League for television ratings in the United States. In 2004, it was reported that NASCAR holds 17 of the top 20 regularly attended single-day sporting events in the world. The popularity behind NASCAR is no secret anymore. In fact, NASCAR is well-known for representing TONS of Fortune 500 companies on the race track. As for the drivers, they’re cashing in heavy and they have the net worth to prove it. Check out the Top 15 Richest NASCAR Drivers of All-Time….