Related Clues:

• One running on a track, maybe
• One making a pit stop, maybe
• Radar target
• Indy auto
• Track competitor
• Heavy-footed one
• Indy 500 entrant
• Slot car, e.g.
• Leadfoot
• Dragster
• Greyhound, for one
• Trooper's quarry
• One risking a ticket
• Radar victim
• He sits in a lot of laps