6 Min Read (Reuters) - Bitcoin took another large stride toward mainstream acceptance on Monday after billionaire Elon Musk’s electric vehicle company Tesla Inc revealed it had bought $1.5 billion of the cryptocurrency and would soon accept it as a form of payment for cars, sending the cryptocurrency shooting higher. The announcements, buried deep in Tesla’s 2020 annual report, drove a roughly 20% surge in the world’s most widely held cryptocurrency to over $47,000. At current prices, 0.8 bitcoins would be enough to buy an entry-level Tesla Model 3. Investors anticipated other companies will soon join a list of firms that invest in or hold bitcoin including BlackRock Inc, the world’s largest asset manager, and payments companies Square and PayPal.