Tesla chief Elon Musk’s corporate jet flew more than 150,000 miles last year, or more than six times around the Earth, as he raced between the outposts of his futuristic empire during what he has called “the most painful year” of his career, according to flight records obtained by The Washington Post. The billionaire executive’s frequent travel on a private plane was paid for by Tesla, the cash-burning automaker that faces billions of dollars in debt and has laid off thousands of employees within the last year, including slashing 7 percent of its workforce this month. Musk’s jet logged more...