This is one dangerous POV display. It’s called the "Display from Hell" and the name makes sense once you realize that while this display projects POV images using 100 blue SMD LEDs, it also features a propeller that could chop your arm off.

The propeller spins at 140mph. It’s huge and terrifying and after you watch this "making of" movie, you may just have nightmares about it. At least they’ll feature a large smiley face.