NEW YORK / AP From billboards to TV ads to endless notifications, Facebook is furiously promoting its live video feature as it tries to get more users to shoot and watch such videos. But will it be a big business for the social network? The prospects for advertisers are uncertain, and even when users do “go live” — broadcasting …

  Bloomberg Self-driving car prototypes appear to be getting better at negotiating California streets and highways without a human backup driver intervening, according to data made public by California transportation regulators. The data reflect safety-related incidents reported by 11 companies that have been testing more than 100 vehicles on public roads, primarily in the Silicon Valley neighborhoods where the technology …

  SAN FRANCISCO / AP Slack Technologies, a fast-growing startup trying to wean businesses off email by hooking employees on its more informal messaging service, is now hoping to snare the world’s biggest companies as customers. The company unveiled a new feature intended to let workers in different departments communicate more easily with each other. The new option, called “Enterprise …