Bemo is short for "Becak Motor" which means "Auto Rickshaw" in Indonesian. Bemo's are public transportation vehicles (i.e. shared taxis).
Those old Three-wheeler Bemos have been banned from Jakarta because they cause a lot of pollution and are old and noisy, and dangerous, but they are still used in parts of Jakarta.
Those are the last surviving Daihatsu Midget I model bemos. The Last year of production was 1972.
For more information about the Daihatsu Midget Bemo, read en.wikipedia.org/wiki/Daihatsu_Midget