Self-driving taxis to roam Gangnam's streets at night from Thursday The taxis, hailed via the Kakao T ride-hailing app like regular cabs, currently operate between 11 p.m. and 5 a.m. on weekdays.

Uber is increasingly grappling with competition from self-driving taxi services like Waymo. Now the ride-hailing giant is taking more action to deal with that threat. Uber is in talks with Travis ...