March 11 (Reuters) - Elon Musk on Wednesday unveiled a joint project between Tesla and his artificial intelligence startup xAI, which he called "Macrohard" or "Digital Optimus" and said that it was a ...

As arguably the top titan of modern commerce, Elon Musk has owned his fair (or is that unfair?) share of companies over the years.

With Elon Musk close to claiming a new role as owner of Twitter after a winning bid to purchase it for $44 billion this week, the billionaire entrepreneur can add the social media app to a long list ...