Looks good :thumbsup:
I would also like to share a little secret i discovered to shoot MRT tunnels.... dont shoot when the train is going full speed.. shoot whn the train just starts from the station. That way you wont pick up any vibrations (which are quite evident in your pic. See my version on this page. http://in.geocities.com/shas3n/photo/photo1.htm
I have a curved tunnel version too which is not as good.