"Someday I may actually compile a list of all the thousands of stories that I desperately want to see written one day. For now, I will mention just one: if someone writes a Clarkson/Hammond/May fic, set in a car, in which Clarkson is thinking about the car the whole time, I will be a very happy person."

You could write it!

What role did Clarkson have in it then? Did he try to run down Voldemort in a car and fail miserably?