Don't be mistaken about distances. Starting from Walvis Bay I though I needn't fill up my petrol as I only had driven 40 km since the last fill up. 200 km later, with the next petrol station they had run out of petrol. Only Diesel. So I drove on to the next one. It turned out it had been out of service for years. So things started to become precarious. On the D707 I was alone the whole day. The first car I saw passed after I had already put up my tent for the night. He stopped and he told me that he was the next door neighbor of the lady living some 8 km up the road. He had another 25 km to go to get back home. Lucky you if you have enough water and can make it to the next farm, if you really run out of petrol.