Coming from the direction of Zurich/Basel, Switzerland:
Drive via Schaffhausen towards Germany/Singen. You will cross the border at Thayngen/Bietingen, from there you'll get directly to the highway A81 towards Singen. After the tunnel, take the first exit at Hilzingen and turn right.
Go straight and at the traffic light towards Singen/Industriegebiet.
You'll pass through another tunnel. Stay on the road until you get to the traffic light, go straight onto Georg Fischer Strasse. Straight ahead you'll see the Supermarket on your left side.
Turn right into Bohlinger Strasse. After approx. 70m you'll see the BREYER main entrance to your left.