It’s fair to say that the journey from Matmata to Douz isn’t the most challenging foreign drive we’ve ever undertaken, with long stretches of empty road cutting a perfect straight line through the desert. In terms of civilisation, there is nothing: a good hour of roadway passing not a single building, let alone anything as grand as a village. In fact the greatest – maybe the only – challenge is the patches where the sand has covered the road, the tarmac has all but disappeared and the grip of our tyres is about as good as a stiletto on a polished floor. At last we reach signs of life as…