Related Clues:

• Gun in the driveway, maybe
• Gun found by clergyman
• Mercury - or Martin from Suicide perhaps?
• See 24 down
• Increase speed, seeing vicar?
• Run (engine) quickly
• Gun for serviceman?
• Get the engine racing, vicar!
• Reverend (abbr.)
• Mercury ---
• Prepare the racing engine
• Speed up engine (colloq.)
• Quicken the engine
• Gun (an engine)
• What might give some more velocity