Thanks for your observation these are roadside stalls in Kundasang near Mt Kinabalu. They also do wholesale early in the morning with basketful of single types of vegetables from their farm. later in the day they sell the smaller varieties packs for travellers and visitors. They are continually being relocated away from the roadside to more organized areas however unpopular and usually abandoned for this "drive thru convenience store".

I kept a copy of this. For us, this kind of family business is a vanishing - a "provision store". Space is getting expensive and things are now "professionally" managed.