Yes you are right, the car had belonged to the Argentine Armed Forces, that's why the artist chose it so a "weapon of destruction" became a "weapon of Instruction". During Argentina's last military dictatorship, the Ford Falcon became infamously associated with the disappearance of people. The sight of one of these cramped with short haired guys in dark suits sent cold shivers down your spine. We soon learnt it was wise to keep out of their way, specially if the passengers were hanging out the windows brandishing fire arms.