Build an Ionic Thruster like NASA Uses for Space Propulsion

http://images.spaceref.com/news/2015/10b.jpg"An ion thruster produces a flow of air even though it has no moving parts. A version of this seemingly impossible device is used on a larger scale to propel deep space probes for NASA. The advantage to this system over others is that you need only an electrical source to power the device and it has no moving parts so it is almost unbreakable. So why aren't we using this to power our cars, boats, planes, and hovercrafts?"

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