https://phys.org/news/2018-05-gm-revs-autonomous-car-dormant.html > Investors, looking for a reason to cheer on the century-old automaker, sent shares rocketing 10 percent higher at the opening bell, the largest one-day gain ever for the company. > The move widens the SoftBank Vision Fund's influence in ride-hailing services. The fund closed a deal in January to spend about $9 billion for a 15 percent stake in Uber and also owns a stake in China's top ride-hailing firm Didi Chuxing.