This story appeared on Snopes a while ago and I found it funny enough to republish it here.

The story goes like this:

I heard a news report on Chicago radio that a guy in California got a speeding ticket that was sent to him via the mail. It was one of those new “camera” set-ups that got him, where a camera is positioned along the highway, sans officer. The camera took the picture of his speeding car & tag number. A letter was generated by a computer & sent to him with the PHOTOGRAPH of his car speeding and the date & time of the offense. The letter went on to state that he had to send in a fine of $40. The story went that the guy was so mad that he sent back the letter with a PHOTOGRAPH of two (2) $20 bills. A week later he got a letter back from the police. He opened up the letter and inside was a PHOTOGRAPH of a pair of handcuffs!

This story is being reported as True.

Snopes.com: Cuff Linked