This is a Russian version of a chainsaw-powered bicycle, though it seems a bit dangerous to leave the chainsaw on the engine - unless you really have to cut your way through the early morning commuter traffic.
Although an innovative design, a chainsaw driven bicycle is definitely not good for the environment, emitting large quantities of carbon monoxide (CO), nitrogen oxide (NO), unburnt fuel and soot particulates.
Via MakeZine & Small Engine Emissions
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