I can't find much information about this video, other than that the people are speaking Dutch. They're obviously having a good time. But if you have to rake those leaves, it's like a Sisyphean hell.
-via The Presurfer
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You can see the woman's shadow in the video here so I'm certain it's the same technology -- so it's not actually a digital carpet. The floor/carpet is just the "screen" for the video projector.
The one at the Ontario Science Centre goes through a bunch of modes including a virtual fish pond that you can jump around in and scare the koi. Kids go nuts for it. I'll bet dogs would too if they were permitted!