Last year Tesla CEO Elon Musk predicted autonomous driving would boost his company's market capitalization to $500 billion.<br />On Monday, Tesla's market cap soared as high as $498 billion even though Tesla is still refining its self-driving software.<br />Business Insider reports that it has only released a beta version to a limited number of customers.<br />Musk made the claim during an investor call in May 2019, when Tesla's market cap was less than $45 billion, CNBC reported.<br />The Tesla chief projected in 2015 that his company's market cap could balloon to $700 billion by 2025.