Peter, does it mean that an uncharged Li-ion battery is safer when shipped?
Indeed. I would expect EVs to follow standard battery practice and ship at low charge (not uncharged as that is damaging to the cells).
In RC models we use battery sacks to contain any LiPo fires (although they mostly occur when charging). I suspect an EV shipped in a standard container would be relatively safe! In shipping it will be the insurers who set the real rules - so expect EV shipping standards to update quickly!