kassadi - Poor guy, sad but can come true if the tow is not secured by parking brake. I live on the top of a peak, downhill in every direction and learned early to not make that mistake.

vasile - This is sad news for him. Getting this kind of bad luck is heartbreaking, but he can get a lawyer https://www.rflaw.net/practice-areas/personal-injury/medical-malpractice/ and try to sue the towing company for the accident. They should provide safe transport for the car that is being towed, and they can get sued if something goes wrong. You are a witness, and if you decide to help him, it would be easier to solve everything without any problems.