Here’s another interesting video, although it’s not as thought provoking as the video you linked, ESPECIALLY the COMMENTS SECTION.
Funny how everyone thinks they ‘know’ what caused it.
Anyway, here’s the video :
I will never spit in a manhole again!! http://www.youtube.com/watch?v=PNdN9I1X7dk&feature=related
Wow, that was pretty impressive. I am surprised only one vehicle was left wrecked.