Autonomous-vehicle road testing has skidded to a halt in the U.S. amid the Covid-19 pandemic. But China’s startups have pushed ahead by more than doubling the number of self-driving car projects, with a boost from the country’s 5G network. Photo: Lorenz Huber for The Wall Street Journal For decades, Chinese leaders embraced foreign investments and exports to power China’s economy. Now, with the world in recession and U.S.-China tensions deepening , President Xi Jinping is laying out a major initiative to accelerate China’s shift toward more reliance on its domestic economy. The new policy is gaining urgency as Chinese companies, including Huawei Technologies Co. and Bytedance Ltd., face increasing resistance in foreign markets , Chinese officials say. In a series of speeches to senior government officials since May, Mr. Xi has trotted out the new strategy, translated as “domestic circulation,” prioritizing domestic consumption, markets and companies as China’s main […]