WSJ’s Tim Higgins explores how CEO Elon Musk turned Tesla into the most valuable U.S. auto maker of all time. Photo: Philip Pacheco/Getty Images More from the Wall Street Journal: Visit WSJ.com: www.wsj.com Visit the WSJ Video Center: wsj.com/video On Facebook: www.facebook.com/pg/wsj/videos/ On Twitter: twitter.com/WSJ On Snapchat: on.wsj.com/2ratjSM #WSJ #Tesla