Its inventors, a German start-up, hope this idiot-proof design will provide "the simplest and fastest way to extinguish fire" and will improve on current fire extinguishers, which many people don't know how to properly operate—you're supposed to spread it around the whole burning area, but many people in the heat of the moment spray it directly into the center of the fire. (Warning, although this next video is cool, there's loud and not awesome music.)
At a little over 3 lbs, it's light enough for anyone to throw, whereas many larger extinguishers are quite heavy. The 140 decibel explosion it makes also serves as a fire alarm. It also doesn't do damage to people in the vicinity, as this video makes clear. It can also be stored on the wall of high-risk areas, where it will automatically explode when reached by heat. Making the world safer is always a good idea, but when you can make it safer and cooler at the same time—that's awesome.