S1, E1: Revealing the inner workings of the world's most enormous machines. Engineer turned comedian Tom Wrigglesworth and Rob Bell, rising star of mechanical engineering, climb on board Victor X-ray, a 200 ton, £200,000,000 Boeing 747. This jumbo jet has flown over 36 million miles in its 14 year life with British Airways. Now it will be broken into tens of thousands of parts in the airline's maintenance hangar in Cardiff.