Hoping that the damage is not as serious as it looks.
We had a cat hit by a car, he was totally paralysed and un responsive, but after a day I noticed him moving his eyes when he saw me. The vet said she had seen a cat recover from similar, and he did improve, to the extent we took him home for the next weekend. It's a long story, with a long slow improvement, but we said that if he could feed himself and go to the litter tray himself we'd keep him. It was brain damage rather than spinal, and we got a little identity disc for him marked "Disabled Cat", for when he went out. He lived about another six years.