Elon Musk suggested his use of drugs benefits Tesla investors in an interview released Monday, saying he takes prescribed ketamine to treat his “negative frame of mind.” The 52-year-old tycoon confirmed he takes the anesthetic — typically used for pain management and to treat depression — following reports in the US media that his drug use was spooking investors. “Ketamine is helpful for getting one outside out of a negative frame of mind,” Musk told […]