As in plasterboard sheets? I don’t see why not if hand loading, plenty of vans will fit a 2400x1200 sheet (my Transporter fitted a bunch of plywood with room to spare). Loading one with a forklift is harder due to no side access long enough to fit 2400mm but that’s a problem shared with tub back utes. If however your plasterboard pallet is side accessible a van with barn doors (like you’d buy if pallets were a priority) will allow you load it in fine.
The bees would still overcome the wasp, assuming it’s a large hive. The wasp will have practical limitations on the amount of ammunition for the weapon (also the question of whether it can reload before getting swarmed) and the ceramic armour won’t help against the bees massing together to form a ball of bees around the wasp and overheating it until it dies.
Edit: Apparently it depends on the type of bees as to whether they do the heat ball of death thing, so your mileage may vary.