The world's largest man-made twister at the Mercedes Benz Museum, Germany

Head over to the Mercedes Benz Museum in Germany to witness the world's largest artificial tornado. It's even got the Guinness Book of Records certification for the claim! It's 34.43 meters (~113 feet) tall, and contains approximately 28 tons of air. It takes 144 jets about seven minutes to produce. The purpose behind this tornado is to suck smoke out of the building and save lives in the unlikely event of a fire. As you can see from the picture, carbon dioxide is being sprayed into the bottom of the tornado to make it visible.
Update - Video after the jump
A low-pressure column in the center of the tornado effectively sucks in any smoke and carries it up to vents in the roof allowing it to escape.

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I have no idea why Mercedes would want to create a tornado. For fun? - Eric Monse