The reason I made my original statement is that old, frequently ex-military trucks and old busses form the backbone of a lot of central and northern africa's transport networks, and the local mechanics are incredibly ingenious and experienced at performing "bush repairs" or fabricating spares to keep them going.
I would add that old vehicles aren't built to the same tight tolerances as newer vehicles. This makes it a lot easier to bodge together repairs for them, which makes them more maintainable by said bush mechanics.
They are the backbone, because they are cheap leftovers. They are very resourceful people for what they have access to. I'm guessing if they had modern trucks, and modern roads, for the same costs of the old hand me downs. They would probably use those instead. Cuba I'm sure is also ready to give up those old cars they've been keeping alive by now.
The reason I made my original statement is that old, frequently ex-military trucks and old busses form the backbone of a lot of central and northern africa's transport networks, and the local mechanics are incredibly ingenious and experienced at performing "bush repairs" or fabricating spares to keep them going.