Most of us don’t think about this much, but it doesn’t take much thought to realise that this is actually quite worrying. I know my car requires a subscription account to manage certain features, etc. And once they have you linked to that vehicle in a very traceable way (my car also has a SIM card built in to facilitate information services and navigation), then all sorts of bad things are possible. I’m quite picky about using unsecured devices… just didn’t think my car was one of them!