In Rio, there's lots of Kombis that do informal passenger service, much like this one, except usually older and worse-looking:
I like to use them instead of buses whenever I can -- they're driven by poor people who have little other opportunities to make money. Every 1-real trip makes a difference for them.
There's usually a driver and a "helper", who opens and closes the doors and also collects the fares. Sometimes there's only the driver.
So, I get in one Kombi one day, it's parked at the start point of its journey. There's a few people already. I get in, sit down and get lost on my thoughts. Somewhere along the journey I notice the "helper" is a very small kid. And the driver (turns out it's his father) is constantly chiding him for "slowness" and "lack of attention".
I ask his age. He's four. FOUR. The father says, "He's slacking. He's pissed because he wanted to stay playing ball instead of working."
Four.
The world sucks.