CAN bus never was the only choice of automotive buses, it's the cheapest option. There were always competing standards like FlexRay and LIN buses, just like there were Rambus RDRAM against JEDEC SDRAM or IEEE1394 against USB.<p>It's what Mercedes pioneered, and what most high-volume manufacturers standardized on, including most Japanese and American brands. Some European companies like Volkswagen-Audi Group uses something else. I think implication of that is clear.<p>Nissan and Toyota had been shipping cars with automotive Ethernet since as early as 2019. Including Toyota's Hydrogen EV since at least 2022. I think implication of that is also clear.