I just caught wind of this film last night. It is short film teaching police about auto theft, a huge problem in the 1950s, mostly because of joy riding. but there is also a message about organized crime and crop shops. The recovery rate in any area is key to understanding what the source of the auto thefts are, whether joy-riders or organized crime where the car disappears forever.
I was struck by police use of the hot sheet in their cars, and how it was counted on a drum-like apparatus. I had little to say about this important tool in my Stealing Cars: Technology and Society from the Model T to Gran Torino (2018).