The morning air still felt fresh at the entrance gates of the Giwangan bus terminal in Yogyakarta, one Saturday a month ago. Most of the public transport drivers were still reluctant to start up their engines. This stood in sharp contrast to the fleet of buses operated by Otobus Efisiensi, with all their engines revved up and breaking the silence since 5:30 that morning.

A woman was busy allocating seat numbers to passengers queuing up close to