See for my other two experiments of this evening:

www.vazaar.com/photos/id:30710/ and www.vazaar.com/photos/id:30708/ :)

My favorite of the three is 30710 in the Low Down topic. On this photo, I would try cropping in on the left a bit so that the white line doesn't exit the frame directly in the corner. The crop would also divide the frame into 1/3s with the two blurred white signs behind the train on one side and the b&w pole on the other.

Wow.
this is a great attempt at some new stuff for you.

I really like the whole experiment you had with all three of these. To me, this is my favorite. I am unsure of the cropping suggestions from above as i can see what he is saying but personal preference for me says leave it as is!
Let see some more of these!

Looks like you are enjoying your new camera. These are all nice. I like #30708, looks like beams of light hanging in the air. I would have worked some curves to try to make the faint image of the car "crunch" away. I think this one is nicely balanced as is. But I also like it if you crop off all the stuff on the right and just show the light streaks, makes it more abstract and graphic.

Thank you all for your comments! I'm very happy with these first results, specially becouse it became by a lot of trial & error.

@ Garrett: it's funny you mention the white line in the left corner, becouse I cropped the original image a bit becouse I wanted the line exiting in the corner. I get your point about the rule of thirds, but I crop my images on intuition. Maybe I can experiment a bit with the rule of thirds.

this is the original image: www.edelsmidhansmulder.nl/Sufkipje/Kunst/trein.JPG

@Clyde: I thought that 'ghost car' is kind a funny? Anyway, I'll experiment with your suggestion.

I'd suggest cropping on the left to make the upper diagonal start at the corner just as the lower one does. It feels like there is not enough space on the top.