This is designer Jan Thinius's conceptual "Impulse Gun," and it's basically the Proton Pack from Ghost Busters, but made to fight fires instead of Slimer. Instead of having to rely on running a hose back to a hydrant, every fire fighter has the water on their back.
So, you may be thinking, "Why not just use a fire extinguisher? Isn't that about the same thing?" I thought that, too, but fighting fires with high-pressure water shot out of a nozzle is different as it penetrates deeper into a serious blaze.
Check out more of the HPI 1000 Impulse Gun in the gallery below.
Via Yanko Design