There are already untethered jetpacks out there! http://www.jetpackinternational.com/video.html http://www.jetpackinternational.com/video.html There are more vi

There are already untethered jetpacks out there! http://www.jetpackinternational.com/video.html http://www.jetpackinternational.com/video.html There are more videos on YouTube somewhere. Try searching "jet pack rose parade" or "jet pack wired nextfest"