This is a short video clip of a piece at the Bumbershoot art exhibition. I have no idea how they do this. I couldn't tell by looking at it--you could hear machinery rumbling, but you can't tell either how the tire is suspended in mid-air or how they get it to rotate. . .
---o0o---
Someone on Facebook suggested that it was probably magnets...which has to be right. The motor you hear is generatng electromagnets that must work against metal or other magnets inside the tire?
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