How can superman fly? You can Googol all the “reasons” why Superman can fly. But in real life, everything within a gravity field will fall towards its centre, until something stops them. There are three possibilities: lighter than air objects will float in the air, boats can sail on the water, and everything else stop at solid ground. The first and second scenarios are due to buoyancy effect. How can a heavier than air object stay airborne? You need energy to offset gravity drag.
Blue Energy advanced transport solutions for 21st century and beyond must incorporate 3D system, which will change the future of human civilization. Traffic congestion in peak hours, or even in off-peak period has become a global problem. No matter how much money invested in conventional transport infrastructure, something better is a fair demand from many people who have put up with the time wasted in slow traffic. To live in a affordable place means you must live far away from everything, or you have to pay expensive housing, for less comfort.