Multi-billionaire Elon Musk recently took a break from his bid to build a colony on Mars to explore the wonders of 'Coppers' – Copper Face Jacks, the popular Dublin nightclub on Harcourt Street.
Musk, 42, broke away from the Dublin Web Summit after he had met with Taoiseach Enda Kenny earlier that day, to hit the dance-floor and mingle with local beauties after midnight.
The co-founder of Paypal, who has been described by Jon Favreau, the director of Iron Man, as the inspiration for genius billionaire Tony Stark, went largely unnoticed in the venue where he stayed until after 2am.
Only after he left did one person whom he engaged in conversation for some time realise he was not only a billionaire, but also the chief executive of SpaceX, a privately owned spacecraft company and chief product architect of Tesla Motors, the electric car makers.
Shervin Pishevar, the co-founder of venture capital fund Sherpa Global, who is strategic adviser to Uber, an alternative taxi service valued recently at $3.4bn, was also in the venue which is noted for its popularity with nurses and guards.
Pishevar, nicknamed "Bill Gates' worst nightmare" by the Financial Times for his ability to spot the next hot technology start-up, is best-known for backing Tumblr, a micro-blogging platform sold to Yahoo! for $1.1bn in March.
Paddy Cosgrave, the founder of the Dublin Web Summit, left drinks with Bono in the Shelbourne to follow Musk to the club along with a rake of Irish start-up entrepreneurs.
Among the Irish contingent in Coppers was Dubliner Eoghan Jennings, managing partner of Parklane Capital, who previously was chief financial officer of XING AG, a social network for professionals hugely popular in Germany.
Tom Millett, co-founder of Irish online music video company BalconyTV, confirmed to the Sunday Independent his attendance. "Elon is a very tall, pleasant guy. I was embarrassingly star-struck when I met him!
Having arrived in Ireland on a private jet before driving in a Tesla sports car to the Web Summit in the Royal Dublin Society, Musk is understood to have departed Coppers in time-honoured fashion – by taxi.