[mikepurvis]

There's also EtherCAT, which has been around for a while and has realtime and safety guarantees.

[PinguTS]

lol, Ethercat, lol

Yeah, it looks like ethernet, but it isn't. It is not used in cars. Currently, I don't know if it will be used in cars. Presumably not. Ethercat is used for hardware in the loop simulation.