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I am sorry to hear about this situation. The police can keep items that they confiscated during a lawful search for the duration of an investigation and/or for the duration of the criminal suit as evidence.
ON RETURNING THE ITEMS
If the items have nothing to do with the investigation/criminal suit and the truck and cell phone are clearly not tied to the case, then they should return it. Should does not always mean will. If they have not, and refuse to, then the owner can file a Writ of Mandamus or a civil suit to as the Court to order the PD to return the items, provided that the Court agrees that they clearly have nothing to do with the criminal matter.
ON SEARCHING THE VEHICLES
The police have a right to search the vehicle WITHOUT a warrant in scenarios listed HERE. However, if they feel that the truck may hold something but no exception applies, they can hold on to it and request a warrant from the Court to search it. If the Court approves the warrant, they can search the vehicle. My guess is that they will find nothing and then will return the vehicle PROVIDED THAT it is not the same vehicle as seen in the video.
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