 He never completed the spin, and never touched a wall, but his adventures were over.On Lap 225, while leading, Raul Boesel's excellent chance to finally win his first IndyCar race ended when his Ford XB engine expired at 90% distance, handing the lead to Al Unser, Jr.He hoped to be the first man to win the Indianapolis 500 and the Michigan 500 in the same year since Rick Mears in 1991, but six laps later he joined his teammates in the garage area, leaving just eight of the twenty-eight starters on track