Related Clues:

• They may be pulled by teams
• Runners carry them
• Travels tirelessly
• Toys "R" Us purchases
• Tots' rides
• 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?