Possible Clues:

• Work on small car
• Wheels for convenience are working: first class fit
• Small pleasure boat
• A car used for short, usually urban, trips
• This car could convey 6
• What the promoters could do in Ring with small vehicle
• Organise a fight in a car
• Nippy motor to race new U-boat
• Small car's exhaust blocked by tar?
• Hurry around in this vehicle