You can banned for a longish time and then have to do an "idiot" test (as they call it) to get your license back. In addition you have to supply hair samples so that you prove you've not been taking any further substance (in recent history).
Generally you have to do a lot to get banned for life - remember Germany is run by car lobbies, they are not interested in banning people from driving,
Generally you have to do a lot to get banned for life - remember Germany is run by car lobbies, they are not interested in banning people from driving,