Units may move into hexes containing any number of friendly, enemy or wrecked units as long as
they have the movement points to do so. Entering a hex already occupied costs one movement
point per additional friendly, enemy or wreck unit. Thus moving into a hex with 3 friendly units, 2
enemy units and a wrecked vehicle would cost 6 additional movement points, in addition to the
normal cost of entering the terrain.
In prctice, I've found it costs 2 MPs per unit, plus the road bonus is negated. I'm guessing it's not a bug, simply the manual needs to be updated?
Exnur