Fantastic, if it really works!
Looks like they took on my idea, haha. I proposed such a device back in 2008, with a targetted product date of 2012:
viewtopic.php?f=3&t=6200&p=48433&hilit=+cloud+device
Assuming this Cloud Gun works, I wish they don't make it look like a gun. Customs at both sides will ask a lot of questions.
Also, I wonder if it only works on low altitude clouds, or on all types of clouds. How could the pellets reach up to the high altitude ones? Hmmm....