Elon Musk is one of the world’s most prominent business figures. A recent headline-grabber was the announcement of the first paying passenger for his SpaceX venture to fly around the Moon. He has a number of pioneering achievements to his name, including creating online payment platform PayPal, running electric car maker Tesla, as well as SpaceX. His innovative and wide-ranging interests include solar energy and artificial intelligence, a high speed travel system involving tubes and magnets, plus he has designs on Mars. But this year, things seem to have turned sour for the tech entrepreneur.