Assume that a person is arrested for drunk driving late at night while driving alone on a city street. He tells the police that he does not want his car impounded and that a friend will pick up the...

Assume that a person is arrested for drunk driving late at night while driving alone on a city street. He tells the police that he does not want his car impounded and that a friend will pick up the car some time the next day. He says he will sign a statement absolving the police from any liability for any loss of or damage to the car or its contents. Can the police still impound the car? Should they?