A Japanese restaurant in London has come up with an innovative method to deliver food to its customers - serving food on what it claims is the world's first flying tray. The remote-controlled flying tray dubbed the iTray can deliver food at speeds of up to 25mph. It is a lightweight, carbon fibre gadget and has a range of 50 meters. The waiter and waitresses at YO! Sushi use an iPad app to guide the platter through the air, while kitchen staff can check that the food is delivered by watching real-time video feeds from two on-board cameras.