“We now have intelligent and connected vehicle technologies along with the capability to bring them to the market—and do it quickly,” GM Executive Vice President and GM China President Matt Tsien said. “However, no one company or one organization has all the answers.” Widespread use of V2X will need support from the Chinese government, including laying down regulations and building smart traffic systems. “It’s a chicken-and-egg problem,” Mr. Tsien said. The U.S. will likely mandate inclusion of V2X for all cars as early as 2019, and GM will begin offering the technology on the 2017 model year of the Cadillac CTS. By contrast, China has no national standard.