Photo from Automated Speed Trap

A motorist was unknowingly caught in an automated speed trap
that measured his speed using radar and photographed his car. He
later received in the mail a ticket for $40 and a photo of his
car. Instead of payment, he sent the police department a
photograph of $40. Several days later, he received a letter from
the police that contained another picture...of handcuffs. The
motorist promptly sent the money for the fine.