Andrew...the biggest air cannon (vortex cannon) in the world is this one from Japan:

Yes...I know... :)

As dangerous as any other knife or dagger...well this one is sell on Amazon...about to $1000 a piece, probably you can have a cheaper one to achieve the same function :P

Good one!

So many sites are now like Gizmodo...just a Title and poor content. Probably writing interesting articles about technology has become very difficult this days...or the writers lack interest for research valuable content. An Email/Phone call to Google and have an interview with “Nougat Team” to discuss the new features…

Agree with you!, also you will get “fridge-coffee taste”...awful!!!!