Elon Musk's net worth slips below $200 billion as Tesla shares waver

Elon Musk's net worth dropped below $200 billion on Tuesday as investors dumped Tesla Inc <a href="https://www.reuters.com/companies/TSLA.O" target="_blank">(TSLA.O)</a> shares on fears the top executive and largest shareholder of the world's most valuable electric-vehicle maker is more preoccupied with Twitter.