In the far corner of Gasoline Alley, where the signs that say ''Andretti Autosport'' hang from the buildings, there is a flurry of activity that can best be described as organized chaos. Michael Andretti has done something else entirely: He has built an auto racing empire. ''He does it for love of the sport,'' said JF Thormann, Andretti Autosport's chief operating officer and a close friend for more than three decades. Or why the team only fields cars for the Indy 500 if he thinks they can win. More...