Because they somehow, deep down, subconsciously acknowledge that they're the liability in the situation, and any sort of contract just serves to hold them accountable.
Towing companies are famously assholes who will just straight up steal your car to the extent that the head of their professional org where I live was like, "yeah you really need to just tear the industry down and start from scratch."
All that to say, I'd love to see the reaction of the person at the yard to this nonsense.
Police impounded the car because it wasn't registered and the driver didn't have a license. Normally I would agree with you, but the police and the towing company did the right thing here.
I can actually understand this one to an extent. A driver's license and vehicle registration are only required to drive on public roads, not legal requirements for having a car. That said, taking a car onto a public road without the aforementioned is illegal and should result in a fine.
Have them sell the car at auction and give the sovereign the cash.
They will not release a vehicle to break the law immediately. (How are you going to drive your unlicensed, unregistered vehicle home from the impound?)
It may be permissible to have the vehicle scrapped directly from.yhe impound.