1. A print media transport apparatus comprising:
a plurality of pallets, each having a self-propulsion mechanism and being to support print media;
an endless track on which the plurality of pallets circulate, the track comprising a printing zone, a descending zone and
an ascending zone,
a controller to control the self-propulsion mechanisms of each of the pallets such that a pallet on the descending zone is
at least partially supported by another pallet which is ahead on the track, and a pallet on the ascending zone is at least
partially driven by pallet which follows on the track.