I am envisioning a beautiful world in the near future, say in the next decade. We will have a couple of self sustaining, colossal airplanes, capable of carrying thousands of people and stay airborne for several months without landing to refuel. 

These planes will house an efficient and reliable nuclear reactor(s) and acts like a tiny city in the air. 

We currently have a few aircraft carriers operating using the principle of nuclear fission. 

Is it feasible to see a flying city, running on nuclear energy, in 10 years time?