" "If this is for real, I will do it ," Musk tweeted in response to a screen-cap of the Zuckerberg Instagram Story. Later, he tweeted "Vegas Octagon," referring to a venue used for Ultimate Fighting Championship fights. If the two billionaires do end up going mano a mano in the Octagon, officiating the match could be a job for the EU's Internal Market Commissioner Thierry Breton, who is due to meet both Musk and Zuckerberg during a trip to the U.S. this week — and wants Big Tech to call him "The Enforcer."
