It's not really a "TV series", but I love the "Dangerous Roads" mini documentaries on YouTube. There are dozens of them.
I realize the title is a little click baity, but the ones I'm referring to are put out by Tony Comiti productions (he is a French ex war correspondent).
They are really fabulous views of real people around the world and the journeys they undertake to move people, animals, and goods, by car, truck, boat, bicycle, and foot. Oh, and sometimes zip line.
Eye opening to view from our privileged western experience.