Related Clues:

• What has to run on wheels — and yet can be seen lined up outside?
• Refreshments off this, or bananas
• Wheeled handcart
• Public transport: you'd be mad not to be on it
• Supermarket mover
• Transporter — that's outside, nothing to shout about
• Vehicle, expensive vehicle, not quite fitting in the yard
• Sort of bus you take round supermarkets
• Shopping vehicle
• A basket on wheels
• Tram
• Bus that's parked outside supermarket?
• Shopping cart
• Cart's still reversing and circling to get going
• Dolly with her head in the clouds may be behind this