On Thursday, $Tesla Motors(TSLA)$ 's stock soared nearly 22%, marking its best single-day performance since 2013. Elon Musk’s net worth jumped by $33.5 billion in a single day, further solidifying his lead on Bloomberg's billionaire index.Q3 Results: Earnings Beat, Revenue MissOn Wednesday, Tesla reported revenue of $25.18 billion, falling slightly short of analysts' $25.37 billion expectations, but up 8% year-over-year. Adjusted earnings per share (EPS) hit $0.72, beating the expected $0.58 by a wide margin.Boosting profits this quarter was $739 million in revenue from regulatory credits, a major factor in Tesla's margin lift. JPMorgan analysts warned, however, that this credit-based boost might be “unsustainable.” Automakers are required to hold