I really love this image.
Any idea whose work this is?
Here's that cartoon in real life (also via reddit).
To be fair, we can't see how long the stairs are and according to redditer ShrimpCrackers, the escalator is in Kaohsiung, Taiwan is a lot faster than the ones we have here and that the stairs are really long.
But still. It's funny.
If those stairs had a piano the traffic flow would be reversed.