Nice prank pulled by LG to promote its IPS monitors and their "lifelike" colors. The company replaced the floor of an elevator and surprised unsuspecting people into thinking the floor gives out below them.
Its a neat trick but what you don't see, or rather hear, in the video is the sound from the hidden speakers. I'm sure LG IPS colors are quite nice but like when you watch a horror movie at the cinema, a good deal of the scare comes from the loudness of the "bang".
I hope no one with a serious heart condition rode that elevator. Check out the video below.