Nio ET9 flagship EV debuts super-fast charging and battery swapping

Nio CEO William Li introduces the Nio ET9Chinese automaker Nio recently unveiled its new flagship EV—a large sedan called the ET9. Measuring 209.6 inches long (with a 127.9-inch wheelbase), 79.3 inches long, and 63.7 inches tall, the ET9 is just over a foot longer than a Lucid Air. It's taller as well, but the Lucid is wider. And both cars emphasize fast charging. Nio opts for 925...