That is a pretty neat video, the story tells about how the expressions on the train were added in a post processing step, but the story and the inspiration seem pretty genuine.
Great video and great father. I have an honest question though, what's the regulation for this kind of things? For example, what would have happened if the train in free fall had hurt someone?
This might not, intellectually, be the kind of article that belongs on the front page of HN, but it was nice to read and brought a smile to my face. I upvoted it.
