Old video of Musk mocking BYD resurfaces after it beats Tesla in sales

An old clip of Tesla CEO Elon Musk laughing at Chinese electric vehicle maker BYD resurfaced after the firm lost its status as world's largest EV seller to it. In clip, when Musk is asked if BYD is becoming a rival, he starts laughing and says, "Have you seen their cars?" "BYD…highly competitive these days," Musk responded after video resurfaced.