That last pic is definitely a semi trailer with palletts in it, the pallets are stacked with boxes, not kids.The pallet behind it could be for another store, when you load a truck you load the last stop first and the first stop last.
My friend drives a refer truck, they haul it rerigerated to deliever produce to the destnation and then on the way back haul cars so they arent running emtpy. Not sure if they turn off refer on way back but that seems a waste if not hauling things that need to be refridgerated.
Yup :)
Hahahaha