Exceptionally long distances to cover, needs some planning with countries not being stable as in yesteryear.
Friends with 4 x 4 vehicles traveled up in a group through Namibia, into Botswana down via Falls through Zimbabwe back to Durban. Valuable tips given was to travel with some goods to barter for food. In goods they referred to books for schooling, shoes, clothing, they had a clear run all the way through.
Wow, that sounds somewhat scary. It is sad to think that there are still so many areas of the world with so many needs left unmet.
It is sad, we took additional things up just to hand out to some of the lovely folk we met up there. Doing the same at home with people stopping to ask for a pair of shoes, clothing or some food.
With the corruption that has happened in both countries we have moved backwards, unlike Botswana and Namibia who are slowly showing more stability.