I don't have the "Feynman Lectures on Physics" where the driver and police officer situation originally took place. The book "What Do You Care What Other People Think" I own (audio version, read from 1989 edition) contains the story "Feynman Sexist Pig!" that is reprinted in the blogpost (and it seems to me, completely unaltered) has no clues or hints on the police officer gender in the initial story.