Wreckers, Tow Trucks, and other recovery vehicles.

[juris]

Easiest solution:

"Your cargo got lost, but we found it."

Originally Posted by Spencer

Very true, but I would assume that any raiders clever enough to start using rigs and wreckers to haul off their salvage would likely also be clever enough to have layered defenses with both anti-vehicular and anti-aircraft mounts. They might even use a fortified abandoned factory or something similar to disguise their chop shop.
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