Related Clues:

• Participant in speed contest
• The fast motor overturned with 'er
• One is in a fast one
• One is in there on track
• The motor that's fast about the motor in reverse
• Derby entrant
• It's kept on track, hopefully
• One on the fast track
• Indy car, e.g
• Thin-bodied snake
• One active in the heat?
• Speedy one in Rolls-Royce?
• Relay entrant
• Winner in posh car, no slouch
• One could be champion in a good car