The man drove @NHRA, @SCCAOfficial, @USACNation and #Indy500, and he's a promoter, master marketer, and he has saved countless drivers' lives through his commitment to safety. A very happy birthday to @IMS Hall of Fame member Bill Simpson! pic.twitter.com/pdiD3jr8Pi

— IMS Museum 🏁 (@IMSMuseum) March 14, 2019