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

Chinese 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…