 He was killed in a road race in Corona, California on April 8, 1916 along with his riding mechanic Erick Schrader and a policeman on duty, when he rolled over in his open-cockpit Peugeot car.Three spectators were also killed, and five others were seriously injured.His death caused his friends Barney Oldfield and Harry Arminius Miller to join forces to build a race car that incorporated a roll cage inside a streamlined driver's compartment that completely enclosed the driver.