Tesla is building a massive factory in Shanghai, the first wholly foreign-owned car plant in China. WSJ’s Trefor Moss explains why it’s doing so even as U.S.-China trade tensions heat up. Photo illustration: Crystal Tai Don’t miss a WSJ video, subscribe here: http://bit.ly/14Q81Xy More from the Wall Street Journal: Visit WSJ.com: http://www.wsj.com Visit the WSJ Video Center: https://wsj.com/video On Facebook: https://www.facebook.com/pg/wsj/videos/ On Twitter: https://twitter.com/WSJ On Snapchat: https://on.wsj.com/2ratjSM