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Autobike ®
From WikiPedalia
A crudely built bike, with a rudimentary automatic transmission. This is marketed for people who think they are too stupid to be able to learn to operate a normal bicycle.
It uses a standard derailer operated by a system of weights and springs in the rear wheel.
As the speed increases, the weights move outward due to "centrifugal force", pushing a ring that rubs on the derailer outward, causing the derailer to shift to a higher gear.
There is no provision for the rider to have any control over the gear shifting.
