Business Insider reports that Elon Musk is $8 billion away from surpassing Bill Gates as the world's second-richest person.<br />This week Musk's wealth has continued to climb.<br />Musks networth hit $114 billion after Tesla was added to the S&P 500 index, edging out Facebook CEO Mark Zuckerberg.<br />It's gained another $10.2 billion after Tesla shares spiked 10% on Wednesday, according to Bloomberg.
