ADVERTISEMENT In three hours on Thursday, shares in Elon Musk’s electric vehicle company plunged by more than 14% in a stunning wipeout, as investors dumped their holdings amid a bitter war of words between the president and the world's richest man. By the end of the trading day, $150 billion (€139bn) of Tesla's market value had been erased — more than what it would take to buy all the shares of Starbucks and hundreds of other big publicly traded US companies. The disagreement started over the