The only thing to make me question this thing's authenticity is the photoshopping of an image on their homepage banner and the way there are black 'felt'-looking things wrapped around the machine to cover up its, what I am assuming are, vital parts.
http://www.airturbineengine.com/
Just because there is a news article about it doesn't mean it's legit; it's not impossible to dupe the media. What do you think?
It's not legit, that thing has FAKE colored all over it. They didn't even TRY to make the textures look real.
FAKE, FAKE, FAKE!!!!!!!!! 
Real or not I'm having one installed in my car right away 
How about installing a Stirling engine in your car NickFun? Place the bulbs under the engine and watch it go!!!! 
from what i know about the way tornadoes form, this doesn't seem to me to be viable as the conditions to create a tornado require temperature differentials, the correct placement of the jet stream and a thunderstorm with the correct air flow structure. I really don't see how they could have fit all of that into something like that and plus I'd like to know how they got a material that was naturally blurry xD
A perpetual lie about the engine is still seen everyone. This baby is fake after second review.