Road America: Al Unser Jr, Galles Racing, March 88C Chevrolet, runs wide while in pursuit of Michael Andretti, Kraco Racing, Lola T88/00 Cosworth.
Al Unser Jr, Galles Racing, March 88C Chevrolet, runs wide while in pursuit of Michael Andretti, Kraco Racing, Lola T88/00 Cosworth.