Fill your bicycle wheels with conveniently available pressurized air stored in automobiles.
Take your bike and go find a hummer (or some other overweight vehicle). Fold the hose in your hand so you don’t waste any precious energy. Attach one end to the automobile tyre and the other to your bike. When you unfold the hose you can hear a hiss. That is the sound of air flowing to your bike wheel and the world becoming a better place
I would never have thought of it.
(via MAKE Magazine)