<p class="MsoNormal"><span style="color:#0e101a">California-based Tesla's stock rally has put its market cap at about $660 billion, making it the sixth most valuable publicly listed US-traded firm. Many investors see it as wildly overvalued. According to the Bloomberg Billionaires Index, the gains propelled Musk's own fortune to $167 billion net worth, making him the world's second-richest person.</span></p>
