As it was a loan vehicle from PML, not sure the exact specs but based on the features, it smells like DAP which has semi autonomous driving with steering assisted and speed braking if vehicle slows down in front. Even if the ACC is not turn on, the LKA (lane keeping assist) will steer the wheel based on road markings.
This is very similar to the Pilot Assist II (PAII)/ LKA for the new generation Volvo and the good thing in Singapore is that the roads are all very well marked out so such features which depend on lane markings can work relatively well. However, I must say that the steering is more precise with the DAP especially at higher speed (e.g. along expressway). For PAII, the auto steering at times cannot turn fast enough at high speed and so you need to intervene
!
Thus, I believe you will find the DAP option useful for the vehicle!