We had to wait a few days in Johannesburg for our carnets (customs passports for the cars) to be ready.  I had been on tender hooks the last couple of weeks as without these documents border posts can become a bit of a hassle and we didn’t have time for too much of that, so couldn’t leave without them! Even though we had started the journey and were on the road having already driven through South Africa, Lesotho and Swaziland. I couldn’t bring myself to believe that the trip was really going to happen.  It was such a big project, and I was given the task to lead it,  make…