(YouTube Link)
Pranksters Dan Podosek and Yuki Palermo like to pretend to hold a rope across walkways and roadways to see who will stop rather than break the invisible (and non-existent) rope. Here's their Christmas video, shot at a snowy road and a shopping mall. There are more videos at the link.
Link via Urlesque
The honking though is completely unecessary on the driver's part.
Hilarious.