I've seen windows kicked out, cages knocked askew fom the floor, doors knocked off kilter, and a variety of lesser damage from prisoners in the back seat of a lockup car.
We tried to use the purpose built vans for transport as much as possible. I saw the back door to a Ford kicked so hard it jammed. This from a handcuffed and belted prisoner.
NOTHING is perfect, ................. except unconscious in the trunk, wait, did I say that outloud?
G