Related Clues:

• Motorless vehicles
• Takes to the hills?
• They may follow dogs
• Slow summer sellers
• Wintertime toys
• Dog-race vehicles
• Some flying saucers
• They usually have two runners
• Conestogas, e.g.
• They have runners
• Tireless racers?
• Olympic racers
• Luge and troika
• They're pulled uphill
• Iditarod Trail transports