I'm hoping the dongle speaks CCS over the CCS port. Otherwise, I'd guess Ford would have to push firmware updates or something to old cars. So, then it's just

I'm hoping the dongle speaks CCS over the CCS port. Otherwise, I'd guess Ford would have to push firmware updates or something to old cars. So, then it's just a matter of authentication. Assuming the auth goes with the dongle and not the car, then it's probably somewhat easy (and also legal) to spoof the authentication between dongle and car, since there's no hardware owned by a third party on that link. If it's passing plug & charge credentials from the Ford vehicle through to Tesla, then I'd guess it'd be harder.