The author was being understatedly polite to the Germans. He knows that you need to be prepared. Notice from the pics the heavy offroad vehicle he was using. A

The author was being understatedly polite to the Germans. He knows that you need to be prepared. Notice from the pics the heavy offroad vehicle he was using. A standard consumer 4x4 is also likely to be inadequate, with stret tyres and too-low clearance. You will also want a full size spare and also preferably a kit and the ability to patch tyres yourself. And emergency food and water for a few days, and preferably a GPS locator and portable shade.