Kate said the man went into his garage yesterday and found Ash curled up in a ball.
"He knew it was Ash and brought him home," she said. "Having him back is better than winning Lotto."
Kate said Ash was taken to a vet, who said he was lucky to escape with minor injuries.
"He has some facial injuries, which will probably scar and a claw which could be broken.
"But he is doing really well considering he fell from a car which was going about 8km/h."
Kate said she thought Ash was trying to make his way home.
"I think he would have been pretty frightened about the whole thing and he would have just been exhausted so decided to try and rest in the garage."
Kate said she was thankful to the people who had been in touch offering support.