Under the category of experimental, we get this inventor working on an atmospheric engine.  This is the second version of a project to explore the possibilities of atmospheric engines:

Published on Nov 29, 2013

Testing a larger motor with great success. Now it’s time to start building a better antenna system. Please watch the previous video for details on the nature of atmospheric electricity:http://youtu.be/do4IO_U3B5o
Links to books and website: http://laserhacker.com/?p=332