OpenBike is an open-source bicycle that can be downloaded, printed, and used for free — it’s under a Creative Commons 4.0 license. While reducing emissions otherwise produced by other vehicular transport, the bike also can be produced more sustainably: the main body is made of plywood, and elements like the seat and handgrips can either be 3D-printed using silicon or recycled from an old bike. The OpenBike is referred to as “a manifesto on sustainable urbanism, distributed manufacturing, the responsible use of resources, and shared knowledge.”