Most of these are nothing more than art bikes with
no real innovation. Some of them will not do what they claim because the
mechanics were not thought out enough. I would love to collect them, but most
exist only as digital images.
If a motor could drive the inside of the rim it
could slow down motor more than using a sheave allowing it to climb hills
better with less power? But it is not much different than a regular bike.
google "concept bicycles" for more info.
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