Royal oaf is right. I've read other stories about Andrew's behavior in regards to his using his car to spray rocks over people arriving at BP. There was one instance when the Guard was in formation to perform the Changing of the Guard ceremony and a car sped through the formation, it was Andrew. This anecdote was related by a poster over at the British Royals MB and had worked at BP. He had other anecdotes concerning Andrew's misbehavior.
The Queen, bless her heart, did her second son no favors.