I envy this sense of adventure, but a lot of Africa is such a volatile place. The countries there are consistently in the top 20 most dangerous places to visit, and placed on do not go lists. Definitely takes a special person to deal with all of that, on top of all of the obstacles they ran into. Looks like they could have avoided most of the transportation issues, by investing in a true land rover type vehicle, inst…
A much safer alternative would be circumnavigating Australia. By land via Highway 1 (the world's longest continuous road at 15,000 km). Or by sea in a luxury super yacht ;) https://www.roadscholar.org/find-an-adventure/21421/circumna...
If I really wanted to understand Africa I'd pick a city and go work and live in it... Not drive through it in an army truck.