Who is The Driver from A Wild Sheep Chase and what is their importance?

The driver for the Boss is a gentle man whose faith in God is strong. He is kind to the main character, in that he cares for the man's cat during his journey. The man speaks many times of the will of man and of the power of human choices. He also believes the Boss has given him God's telephone number. Although a minor character in the story, the driver's kindness and gentle nature leave a lasting impression.