Alan and I carpool to work, but if we took the subway, shopping at this virtual grocery store would be the raddest way to wait for the next train. That's what these lucky commuters in South Korea can do. Tesco plastered pictures of their stores' products on glass walls in the subway, with all the "shelves" organized just like how they'd be in a physical store. To order items, shoppers just scan QR codes with their phones, and the items are delivered to their home that same day. Isn't that clever? Remembering to buy milk or toilet paper on those days you run out would be so much easier.