Related Clues:

• Hayride vehicles
• Prairie schooners
• Trucks along the Thames
• 46-Across vehicles
• Conestogas
• Trucks, in London
• Some were covered
• They're sometimes circled
• Pioneer carriers
• Chuck and station
• See 25 Across
• Farm carts
• Motorway vehicles
• Pioneers' vehicles
• They may be covered and circled