The man from The Guinness Book of World Records was standing by. The laser-timing gate was in place. The twin engines of my £2500, purpose-built, radio-controlled car were gargling nitro. I was ready for a world speed record attempt. As for whether I was successful, well, you’ll have to ‘find out after the break’ – as I’m bound to secrecy until the ‘RC Car’ challenge goes out on The Gadget Show. What I will say is that when a fifteen-inch car made of aluminium and carbon fibre goes beyond the fifty miles per hour mark, you stop breathing – as the slightest wrong movement can send it airborne. Watch this space.