@Myphatself For what it's worth, my polestar reports the drivetrain battery charge over the OBD port, so you could likely get that to transmit with something like https://www.home-assistant.io/integrations/torque/
@Myphatself (if, instead of Torque, you might be able to rig up a bluetooth proxy and read off the bluetooth device directly; not entirely sure what's involved there)
@chrisjrn the neighbors Rivian I can't keep out of my HA. I know when he is home and how far away his truck and keys are.