In fifty years I guess the first full electric cars will just begin to be affordable and equal to oil fueled vehicles in terms of capacities, so I think the world will be a deal darker than that cause of the particles in the air, and the planes will probably still look like planes.



Though... your piece is stunning, the colors are awesome and so is the design of those structures.



But let's be realistic, Earth will never grow into a paradise world like this any time soon, not with 9 billion people limping on the surface.