Overruns

If the Size Modifier of the striking
object in a collision exceeds that of the
struck object by two or more (e.g., a
car hitting a man) the striking object
“overruns” the struck object. This
inflicts additional crushing damage:
roll thrust damage for ST equal to half
the striking object’s HP (or half its ST
score, if it has one). Even a slow-
moving elephant or a tank can crush
someone who doesn’t get out of the
way. This rule does not apply to falls.
Anything with a ST attribute can
deliberately trample as well; see
Trampling (p. 404).