Enter for a chance to WIN the June 3rd Knoxville Raceway Special Edition Souvenir Chad Boespflug "Raced" Visor from the Hoffman Auto Racing Mean Green Cleaner #69 Amsoil USAC National Sprint Car. 100% of proceeds from online/track sales to benefit the Epilepsy Foundation of Indiana. One visor available to be autographed by Driver Chad Boespflug before delivery. Visor will be shipped following the Knoxville Raceway Event June 3rd, 2017.