Unique bike gearing system...

Because I hate derailers, first of all.

Secondly, I haven't seen too many front chainrings that have anything much bigger than a 44t gear. This bike has a pretty huge sprocket on the left side.

I dunno... honestly, seeing the video reminded me of SimpleSimon's idea of having a friction drive setup that spun two different sized rollers. Just threw the video out there for a lil' perspective.
 
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