Related Clues:

• They may be pulled by teams
• Runners carry them
• Travels tirelessly
• 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
• They have runners
• Tireless racers?
• Olympic racers
• Luge and troika