In the UK a psychiatrist will generally notify, for example the DVLA, if they think a patient's mental state is such that they pose a risk to themselves or others when driving. In fact, mental health professionalservices have a duty to breach confidentiality when the risk of harm significantly outweighs the alternative. I don't no enough about how things work in Germany to comment specifically on this case, but I would suspect the issue isn't one of 'rights'. Though I don't understand why the OP implies such a downer on rights generally - in principle, human and civil rights are a good thing, no?