Spiral supermarkets

Is there a way to make supermarkets even slightly energy-efficient? The average out-of-town store is a vast warehouse heated to make it comfortable and then filled with freezers that use extra energy moving the ambient heat in the shop from their open fronts to their backs via the cooling system.

Could we have the store ranged around some kind of gentle spiral ramp, freezers at the bottom, meat and fish, dairy, fruit and veg then bakery to warm the dry goods and finally the checkouts at the top? If the whole thing terminated in a two-storey precipice overlooking the car park it would give new meaning to the phrase 'shop til you drop'.