It was November 2013 and Elon Musk was ready to let his hair down in Dublin. Earlier that day, he had enthralled the crowd at the Dublin Web Summit with tales of space exploration and electric cars.  Now it was coming up to 2am, and Musk was in Copper Face Jacks, the Dublin nightclub on Harcourt Street. The founder of Tesla and SpaceX mingled happily, enjoying the ritual of a visit to a nightclub that is best known for hosting everyone from victorious Dublin GAA teams to younger politicians on the lash after the close of the Dáil. As Musk,…