Well i'm not sure if this has been posted before, but i can't seem to find it on the search. Anyway here is a very infomative and interesting video on Japanese Bullet trains (by Richard Hammond) illustrating the technologises and engineering done inside the Bullet train to make it the World's BEST and SAFEST high speed rail:
http://www.youtube.com/watch?v=yDjELN3BeTo
*Admin pls assist to remove/ merge if this has been posted before. Thanks!*