Chaiyya Chaiyya

This is a really cool bollywood song by Dil Se (i think xD), one of my fav I hope you all like it. I wonder how they filmed the whole thing while they're dancing on the train... I wish i had more information on the video if anyone does please post it.
EDIT Apparently Dil Se is the name of the movie, also if you REALLY want to know more about this movie I suggest you read the comments xD. Theres alot of information down there