Meat Wagon

From wow.incgamers.com

The meat wagon, as seen in Warcraft 3, is likely to be making an appearance in Lake Wintergrasp as part of the siege based PvP. It is used to collect and store recently slain corpses from the field of battle, which can either be pulled from the Meat Wagon and raised into undead warriors, or is able to throw diseased corpses at enemy units by use of a crude catapult device.