Gorebeast Chariot

A Gorebeast Chariot is a massive construction of hell-forged metal,  mutant beast and jagged blade, ridden to war by some of the most powerful and bloodthirsty warriors in the world. Its sole purpose is to deliver an unstoppable force to a weak point in the enemy battle line, smashing apart those before it and scattering the rest in panic and disarray. Few foes can muster the courage required to stand before the rumbling charge of one of these murderous war machines, and those foolish enough to do so are torn apart by monstrous jaws, cut to pieces by keen-edged halberds, or crushed into the dirt beneath heavy, iron-shod wheels.

Gorebeast Chariots are even heavier and sturdier than other Chaos Chariots. No normal beast would have the strength to pull such a massive instrument of war, and they are therefore pulled into battle by a Gorebeast, a muscular creature renowned for its violent temperament. These grunting brutes strike their prey with such shocking force that those not impaled upon jutting arm our spikes are torn apart by the impact. Even the lowliest of beasts recognise the bulky shape of a Gorebeast as synonymous with death.

Source

 * Warhammer Armies: Warriors of Chaos (8th Edition) -- pg. 36