WELL BLOW US down: Those scrappy engineers did it. They built that crazy straddling bus a Chinese company announced three months ago, and damned if it doesn’t work. This weird wonder—officially, it’s the “Transit Elevated Bus”—gets through traffic by driving over it. And according to the Chinese news agency Xinhua, it got through Tuesday’s test drive in Qinhuangdao without decapitating a single Geely Panda. Some specs: This thing is 68.9 feet long, 25.6 feet wide, and 15.7 feet tall. “There’s enough space on this for old ladies to have a dance performance,” wrote one Weibo user. One carriage can carry...