It's pretty cool but it should have redundant engines. Engine failure is inevitable and it'll cause injury.
They have ducted fan helicopters in Avatar (James Cameron's recent movie). That's similar to this except the Avatar copters had tail rotors and a vertical stabilizer. I suspect that it's a bad design choice since ducted fans it may not auto-gyro.
For the jet pack, I don't think there are many applications for it aside from just screwing.
But perhaps a cool discovery gets made while developing that stuff.
Maybe they could cook up a VTO (vertical takeoff and landing) ultralight that has a wing and can also fly using the wing.
I saw the comments about using flying things in place of cars. One huge issue is that cars already use too much energy. Thing that fly are even more demanding for energy. So where things stand now, I doubt airplanes will replace cars for a long while. Things that fly will be better for stuff like the airlines and military are already doing for a while but not to replace cars.
