First off, the detained man should have been handcuffed with his hands behind his back. Then he should have been placed in a rear seat diagonally from the driver and placed in a seatbelt. As was shown above you need a police transport vehicle with a shield/wire mesh separating the front seats from the row behind the driver. The area where the detained person sits also needs to be made of hard plastic for a variety of reasons. Next, why are they transporting the detained person's mother? She should find her own way to wherever they are going. I can only speculate as to why she was being transported so I won't go into that. Basic LE principles seem to be lacking in the RTP which would have saved this officers life, injuries to others, and the damage to the police vehicle.