Fly by...

On a flight from London to Chicago, four hours into the flight when we were somewhere over the Atlantic I noticed an Air Newzealand plane in mid air. It was flying in the opposite direction and at a much higher altitude. Appearing like a tiny paper folded plane it wizzed over at great speed.

I don't know about you, but this was the first time I have seen something like this when mid-way into the journey.