A flying sushi service tray known as the “itray” is demonstrated by staff at a “Yo! Sushi” restaurant in London

A flying sushi service tray known as the “itray”, created using miniature remote-controlled helicopter rotor blades, is demonstrated by staff at a “Yo! Sushi” restaurant in London June 10, 2013. REUTERS/Neil Hall (BRITAIN – Tags: BUSINESS FOOD) – RTX10IPM