No-one has ever attempted an indoor hour-record on a Penny Farthing, we're about to find out why! Not many bike riders at a professional level enter an event wondering if completion will be possible but Mark Beaumont, James Lowsley-Williams and Chris Opie are about to as they attempt to set a Guinness World Record. But they're not just attempting the one, they're also attempting to break the outdoor record at the world famous Herne Hill velodrome. This is no easy feat, since the record of 35.54km has stood since 1886.