BYD, the Chinese EV giant and Tesla's arch rival, unveiled a vehicle-mounted drone system that lets drivers deploy the gadget ...

The president endorsed Tesla, calling it “a great product, as good as it gets.” He endorsed Musk, saying he is “a great patriot, and you should cherish him.” And then, he bought a car.

The drones can take off and land autonomously from a special housing on the roof while the car is moving at speeds up to 33 mph.

BYD's latest trick for taking on Tesla in China's brutally ... The drones are housed in a roof compartment, can take off and land from a moving car and follow the vehicle at speeds of up to ...