Inside the shocking rise of BYD, China's top EV maker

In just a few years China has become the world's largest car exporter, and electric vehicle-maker BYD is leading the way; it's now the top-selling EV producer globally, overtaking Tesla and expanding into Europe and beyond. Bloomberg's Tom Mackenzie reports from Paris, where BYD unveiled its latest luxury EV: the Denza Z9GT. He speaks with BYD Group Executive Vice President Stella Li and Alfredo Altavilla, BYD's Special Adviser for Europe, about the company's rapid rise, its technological edge, and the growing pressure on legacy automakers.