Hyperdrive
Almost Every Electric Scooter in the World Comes From This Chinese Company
Ninebot makes powered unicycles, Segways and other odd-looking artifacts of the transportation future. It didn't see the scooter boom coming.

Scooter-sharing company Lime recently relayed a troubling message to its users: a portion of its fleet was at risk of bursting into flames.
The startup recalled about 2,000 vehicles, less than one percent of its scooters, following its Oct. 30 warning message. The situation brought to mind scenes from three years ago of those skateboard-style conveyances known as hoverboards catching fire and promptly falling out of use. Would spontaneous combustion sink the scooter next?