I see them on Google Earth. As a side note, I don't think that's desert as the surrounding areas are quite green. The series of shots that make up that area were probably done in the winter versus the surrounding area in the fertile months.
Is there an assembly plant nearby? Ford perhaps? Could be storage. The imports are stored like crazy at the docks on the West coast.
Edit: It could be the storage lot for a company that does conversions for commercial purposes. Which would explain the building. There is a company within a few miles of me that does this. These vehicles are different colors though, so that's probably not the case.