Small roads are commonly surfaced with bricks.
Fine if motorbikes are using it but they damage very quickly if cars travel along them.
Cars usually use such roads to avoid traffic jams.
The work is back breaking but money is money; more so when you don't have much.
However, the Indonesian national hobby of trying to produce the happiest smile is never forgotten.
Even these guys, working like donkeys in terrible conditions, manage a happy smile and a wave to the foreigner.
That's much of the reason I love Indonesia.