We have recently been introducing you to some new toys powered by hydrogen. Now the same company that created those vehicles has collaborated on a project with the German Air & Space Center and a Swiss company working on building a fish-shaped jet. It seems that the team decided to first attack the design by creating an unmanned radio controlled plane. Although the video calls this vehicle a jet, I have been trying to do some research on the project, and this may be more of an electric impeller driven plane, and not a jet turbine. Still, some records appear to have been set regarding the size and power output of the fuel cell provided by Horizon Fuel Cell.
[Source: Youtube via Hugg, Horizon Fuel Cells and SmartFish]