Possible Clues:

• Al, Bobby, or Jerry of racecar driving
• Name of at least eight track stars
• Indy racer Al or Bobby
• Big surname in auto racing
• Four-time Indianapolis 500 champ Al
• Bobby, Al or Al Jr. of Indy fame
• Big name in Indy racing
• Four-time Indy 500 champ Al
• Surname of a famed racing family
• Indy-winning family name