Stefan-Daniel Knüpfer-Wallmann

ZWEISTIL - convertible bike -
With its interchangeable frame geometrie, ZWEISTIL closes the gap between
existing ordinary bikes and recumbent bicycles, combining their
advantages, but neglecting their disadvantages. With Zweistil,
it is now possible to ride a normal bike in the city or wherever a
good overview and high maneuverability is needed,
as well as to switch to a recumbent position instantaneously,
without stopping the bike, when the driver is looking for maximum
speed and efficiency.

• Industrial Design