(Bloomberg) -- A blank-check firm affiliated with Bernard Arnault, the world’s richest man, just reached a deal to take a potential challenger to No. 2 billionaire Elon Musk onto the public markets.Most Read from BloombergSony Slashes PlayStation VR2 Headset Output After Pre-Orders DisappointTrump Sues Journalist Bob Woodward for Releasing Interview RecordingsBrexit Is Costing the UK £100 Billion a Year in Lost OutputPutin’s War in Ukraine Pushes Ex-Soviet States Toward New AlliesWall Street Is