https://i.ytimg.com/vi/tL0G5oOjdtk/hqdefault.jpg
http://www.blenderhd.com/
Learn how to fake smoke by using textured particles, and how to animate their size and material properties over time.
Final File can be downloaded here: http://adobe.ly/1mGwEWF
The train model is courtesy of Chris Kuhn.
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