Tesla’s stock plunges by half - is Elon Musk’s EV party over?

Tesla's market capitalization has dropped 45% since hitting an all-time high of $1.5 trillion on December 17, erasing most of the gains the stock made after CEO Musk helped finance the election victory of U.S. President Donald Trump. Are investors still sold on Musk's unborn products? Fiona Jones reports.