Watch the Lucas Oil Silver Dollar Nationals at Shelby County Speedway on the FloRacing App via the link below! This live preview will not show the full event. #LucasDirt #SilverDollarNationals More For Less. Get 7 months free with an annual subscription: flosports.link/4mG6GSC Get the FloSports iOS app: bit.ly/FloRacingiOSApp_9 Follow FloRacing Facebook: facebook.com/FloRacing.tv Twitter: twitter.com/FloRacing Instagram: instagram.com/floracing