Trebouchét firing a cow

The weird mind of mine has long wonder how much a cow fired from a trebouchét would do in damage. This is vital to know when you got munchkins in your game, a cow fired from a trebouchét makes a statement from the GM that the game gonne from munchkin to weird.

IFR of trebouchét : 200m
type           Dam      Pen
-----------------------------
COW Person     [1]      [1]
COW Vehicle    105      [2]
[1] This is a direct hit from a cow
    DAM : 15d6 per body part
    Pen : don't count personal armor
[2] Well think about that this aint a
    ordinary round 700kg(1400ibs)
    incomeing with 200-250km/h (120-
    140mph) would make a considerable
    damage to a vehicle. Therefore use
    the penetration after your wise 
    head it would smash a compactcar
    and lower it with a feet or two or
    even more
Damage is calculated from "Fire, Fusion & Steel".

There are rumors around the GM community that there are Munchkins seeking muntion for the trebouchét, this ain't confirmed from me. =)