Think jet trikes are a recent invention, brought to prominence by Paul Bailey's 'Colossus' in the 1990s? Think again. This splendid beast featured in Popular Mechanics in 1952, and the owner, Stanley M Eakin, of Grove City, Ohio, started building it just after the Second World War. We have no clue what happened to his jet-powered machine, but, now aged 90, Mr Eakin is still alive and living in Ohio. Hats off to him!