Caught speeding

A man was speeding down the motorway, feeling secure in a
group of cars that were all traveling at the same speed.
However, as they passed a speed trap, he got caught and
was pulled over.

The officer handed him the citation and was about to walk
away when the man asked, "Officer, I know I was speeding,
but I don't think it's fair - there were plenty of other
cars around me going just as fast, so why did I get the
ticket?"

"Ever go fishing?" the policeman asked the man.

"Ummm, yeah...," the driver replied.

The officer grinned and said, "Have you ever caught all the fish?"