High Quality Content by WIKIPEDIA articles! Much of the structure, rules and details of NDWC mimic the current NASCAR Sprint Cup series in a computer simulation form. The inaugural series is 39 weeks long with 18 races in total, and uses a simulated version of the Sprint Cup Chevrolet Impala SS. The series has a total of 50 drivers and the points system is based on the scoring used in Sprint Cup. Drivers wishing to take part in the championship series must first progress through the standard iRacing.com license program and earn a Pro-level license limited to the top 250 drivers in iRacing. Pro license holders can then take part in a separate Pro series that serves as the qualifying series to the World Championships.