Rowling said, "That turquoise and white car meant freedom and no more having to ask my father to give me lifts, which is the worst thing about living in the countryside when you are a teenager.
"Some of the happiest memories of my teenage years are zooming off into the darkness in Sean's car."
"Harry was rescued by that car, just as the car rescued me from my boredom," said Rowling.
She said, "He was the first person with whom I really discussed my serious ambition to be a writer and he was the only person who thought I was bound to be a success at it, which meant much more to me than I ever told him at the time."