The $6 billion amount would be just a small fraction of Musk’s current net worth of $311 billion — and less than the $9.3 billion his wealth increased on Oct. 29 alone, according to the billionaire’s index. Musk’s challenge may seem dodgy to many – but Musk has usually always seen his ‘eccentric’ ideas to the end. Musk’s ideas have always been ahead of its time, and sometimes ahead of competitors too.