The vans have no shoulder restraints.
At all.
There isn’t a way to exonerate law enforcement here when they are negligent to that extreme.
Why bother speculating when the only thing to speculate about is how big the payout will be, not whether or not there should be one. This one can’t even be laid at the feet of O’Bonghit and his minions. There would be a payout here if Palin or Cruz were in office.
Find out whether the paddy wagons in your area meet rudimentary safety standards. If they do not, go to town meetings, talk to the citizenry around you, and get it fixed.
Better still, don't live in a place where they need paddy wagons!
Despite Dr. Carson's vast expertise, I suspect that if you handcuff and restrain a person, lock him inside a metal box, and then drive the metal box fast enough over potholed streets, it is possible to severely injure him.
IIRC, Baltimore has paid out a lot of money for injuries that occurred under similar circumstances.