Mogelijk is ie al eens langs gekomen, maar ik vond deze toch wel heel bijzonder. Iets wat ik zelf nooit zal installeren: de Air Hub.

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Gemaakt door http://www.nakano-iw.co.jp/, mocht u interesse hebben. Volgens de makers:

"Less air pressure causes a flat tire, but leakage of the air is inevitable as long as rubber is used inside the tire. An idea to keep pumping the air while riding a bike has flashed into my mind and it seems better to make such a mechanism rather than waiting for a rubber maker to produce leakageless rubbers.
After spending a lot of time, we have finally developped a hub continuously supplying with the air while cycling."