Do you always have to constantly stop to refill your water bottle on long bike rides. Kristof Retezár, a student at the University of Applied Arts in Vienna, Austria, has come up with a new way to quench your thirst on the go. He has invented a little thing called Fontus, which he calls a “self-filling water bottle for your bicycle..”

Descriptions of the Fontus, including pictures can be found here:  http://www.impactlab.net/2014/12/04/fontus-a-bottle-that-turns-air-into-water-as-you-ride-your-bike/