What usually covers the wheel of a Douglas? - blanket, tent, sheet, ice, tarpaulin, mudguard, shed, sack, snow, cardboard:

What usually propels a Douglas forward? - pedals, wind, rope, sunshine, water. beer, engine, feet, toes, propellor, sail, wing:

Which of these is most useful when on a Douglas at night? - spanner, screwdriver, headlight, cigarette, handkerchief, hat, hamburger, mudguard, camera, pen: