In Toulouse, southern France, the unique metro line is entirely driven by computers. There's no human driver. So you go to the front and see the train's tracks.
While chatting with friends, I set the shutter opened for 5 seconds, waited for a curve and click!
There's no post effect!
You may also try my speed tag ;-)
One year later edit:
Today, this picture has been posted a year ago and collected:
273 people call this a favorite
I wanted to say that I thank you, I thank flickr team too.
This is the good example of motivation this website community could give and helped me to improve my passion.