Note: The following image links to a promotional video from Aquaduct
In the most recent Innovate or Die contest sponsored by Google and Specialized, the grand prize winner was the Aquaduct, a pedal-powered concept vehicle that transports, filters, and stores water for the developing world.
According to the website,
As the rider pedals, a pump attached to the pedal crank draws water from a large holding tank, through a carbon filter, to a smaller, clean tank. A clutch engages and disengages the drive belt from the pedal crank, enabling the rider to filter the water while traveling or while stationary. The clean tank is removable and closed for contamination-free home storage and use.
The vehicle is still only in the prototype phase, but we solute their creative thinking and look forward to it becoming a viable solution.