Electric vehicle stocks retreated in the week that ended on May 10 amid profit taking, withsome earnings reports from the space weighing down on several stocks. Here are the key events that happened in the EV space during the week: Another Key Tesla Executive Departs, China Sales Woe And More: The week did not bring respite to the ongoing right-sizing efforts at Tesla, Inc. (NASDAQ:TSLA). Rich Otto, who served as head of product at the company, announced this week that he was departing after a seven-year stint at the company. In a LinkedIn post that has since been deleted, Otto reportedly said…