A billionaire battle in 🇮🇹 Rome's ancient colosseum ? Elon Musk released a detailed outline of his much-hyped cage fight with Mark Zuckerberg on Friday but he apparently did so without getting his rival’s sign-off. Mark Zuckerberg appeared to suggest that any comments from Elon Musk about their proposed fight should be taken lightly. #italy #sports #mma #security #threats