Is Cargo a Valid Hit Location if There is no Actual Cargo?

[Mettius]

For Car Wars Compendium (PDF from Warehouse 23).


Many vehicles will not have every component listed. If a component
is not present, just skip it! Few cars will have both front and rear power
plants (motor); many will have no gunner, turret or cargo.

and then states...

When a weapon penetrates from the front or back, the damage goes
to each internal location in order. Only one actual item in each location
can be damaged by a single shot. When a weapon penetrates from the
side, roll randomly to see which of the three locations is hit. Re-roll for
any nonexistent location. A location that is destroyed (such as a
destroyed PP) is still a location which damage can hit and pass
through. A car with unused space does have a cargo location, even if it
doesn’t have any actual cargo.
-p41 CW Compendium

We are a bit confused. I'm getting back into the game after many many years. So in the case of damage coming through the under body armor a single component would be hit until destroyed, then remaining damage would hit the top armor.

In the case of a vehicle design which does have some extra spaces and weight left over, does this mean there exists a cargo hit location? (With no DP, and nothing in it?) Or only if there is something like a passenger stuffed in the trunk or some other scenario defined "cargo"?