Reshared post from +TECHNICS
The Ktrak is a patented wheel system that turns a mountain bike into a pedal-powered snow machine and all terrain vehicle. Created by Kyle Reeves, the biking innovation is a kit that can attach to the rear of any mountain bike. It creates traction on previously ‘unridable’ surfaces such as snow or sand, turning your bike into a snow or sand plough.
Read more about history of this invention: www.goo.gl/k2QDi