ElliptiGO 3C bike, sofa bike, WISB hand bike, lawn mower bike, hover bike, green transportation, alternative transportation, human-powered vehicle, bicycle, concept bike

From the crazy ElliptiGO 3C bike that takes you on a mobile elliptical workout to the Sofa Bike, which is exactly what it sounds like, we hope you enjoyed these crazy vehicles as much as we enjoyed putting this together for you.

Would you buy any of these concepts? What is your idea of the ideal human-powered vehicle? Let us know in comments.