An electric bike from SiGNa that is powered by water

Water is a good conductor of electricity. But some people take science a bit too literally. SiGNa, for instance has come out with a fuel-cell powered electric bike that can run for 60 miles on a single charge, and it runs on water! Well, almost, not quite literally though. The cell on which the bike runs is powered by a powdered form of sodium silicide. To get it up and pumping you need to add water so that the reaction can generate hydrogen gas to generate electricity.

And since there is no direct storage of hydrogen, the cells are safe, plus any extra electricity generated is stored in the batteries to give you a boost to climb up hill terrain. Moreover you can hot-swap and fully recharge the cartridges. While you get better range on your battery, it cuts down on the portability factor; you will have to stack up cartridges if you’re visiting places where the technology hasn’t arrived yet.
[Wired]