UPDATE 2-China's Ninebot unveils scooters that drive themselves to charging stations

Segway-Ninebot Group, a Beijing-based electric scooter maker, on Friday unveiled a scooter that can return itself to charging stations without a driver, a potential boon for the burgeoning scooter-sharing industry. Ninebot said Uber and Lyft, the ride-hailing giants that are expanding into scooter-sharing, would be among the customers for the new semi-autonomous vehicles that are expected to hit roads early next year.