Thanks for the award-winning tour!
In Central/South America they use a lot of old school buses, transported from the U.S., for transportation, where they paint them bright colors, put racks on top, and are deemed chicken buses, which I've so enjoyed riding in when down there as they become roving super markets, vendors hopping on and off, in journey, trying to sell you anything, everything, even cooked food, like fried chicken.
The other alternative is vans, and I see they use any number of them in South Africa. I took only one van ride, in Peru, one time. All started out fine, with only a couple passengers, and then as we got nearer to the destination, I still can't believe it, how they crammed 25 people into that older Toyota Van, along with their baggage! Squished in there like sardines, and this driver was speeding like crazy on a rain-slicked highway!
That was the very last time I ever climbed into a van in either Central or South America, and I wouldn't ride in one in South Africa either!
A sturdy old school bus converted into a chicken bus! Now that's much safer, IMO, in case there's an accident!