Everybody looks at train wrecks, only some train wrecks make us wonder how they happened!

Wonder how these two happened! from http://www.jalopyjournal.com/forum/showthread.php?t=428585&page=477 the most famous was the French train that plowed out of the 2nd story of a building to the street below http://justacarguy.blogspot.com/2010/02/one-of-most-impressive-photos-ive-seen.html