http://interestingengineering.com/swedish-maker-creates-8-rotor-flying-chair/
https://www.youtube.com/watch?v=ALYECvs06XI
I noticed it is already posted in "Favorite Videos".
Looks pretty dangerous though, unless the chair itself is built as a crash resistant shell.
And want if it wants to fly away ? What kind of failsafe, other than parachutes ?