You clicked? Okay, go read this post on Roadtrippers, watch the video, and come back.
Any ideas? The video is undeniably creepy, but my first guess is mental illness. This looks very much like someone in the midst of a schizophrenic episode. Something similar happened to my cousin in her 20s, though thankfully she didn't end up dead. She was just found wandering along a highway by the state police a couple of days after disappearing.