Faculty at Delft University of Technology are tediously designing what they call 'the ultra-eco-friendly plane'. It's hard to say what the four year project dubbed "CleanEra" will come up with. They doubt the final product will look like this flying saucer, but it's difficult to imagine given the multi-disciplinarian group of scientists that make up the team.
Implications - But for those who can dream, the CleanEra flying saucer design will look exactly like a UFO. The round disc shape should make every sci-fi can gaze at it in glory should this ever come into fruition. At the moment, it won't be ready to take off in four years, but know that a preliminary design is complete, so perhaps you may see this quite soon.