Hyundai is next considering joining Tesla's North American Charging Standards Alliance $TSLA. My guess is that every EV manufacturer with any sense will end up in that alliance sooner or later.
Tesla Superchargers make up about 60% of available fast chargers in the US, and Ford $F and General Motors $GM have in recent weeks entered into agreements with Tesla to use its charging technology, now dubbed the North American Charging Standard (NACS).