Imagine taking a brutal cross-state bicycle ride without once stopping to top off your water supply. That thirsty-sounding trek could become a comfortable reality one day thanks to Kristof Retezár, an Austrian designer behind an incredible, self-filling water bottle.
Retezár's "Fontus" system, which is competing for a James Dyson Award, is a sleek, two-piece contraption that attaches to a bike's frame. When a cycle is in motion, air is funneled into the top holster and distributed over a "condensing structure." A solar-powered cooling element then turns it into moisture that drips down a pipe into a detachable water bottle. (Any kind of half-liter PET bottle will work.)