OH SHIT!

Probably what the engineer said when he remembered to look back!

EDIT: 8/28/05: After closer examination, it's plainly obvious this has been Photoshopped! Note the struts beneath where the bridge actually is. Not to mention that the car on the end would not be dangling like that, as it would certainly come uncoupled from the rest of the train! Interesting photo, none-the-less.