A Xpeng G9 is displayed at a store in a mall in Beijing on Feb. 29, 2024.BEIJING — Self-driving taxis won't be a significant business for at least five years, Xpeng Vice Chairman and Co-President Brian Gu said Thursday.That prediction comes as Elon Musk has promoted his vision of Tesla as a company that is developing artificial intelligence software for the commercialization of a robotaxi network.While robotaxis will be transformative for mobility if they become prevalent, "to have a real, full-fledged comm ...