The only reason it's rare to see full body fairings on upright bikes is that there's no point in making them because if you're ignoring all the UCI rules and going for maximum speed you might as well go 'bent.
But here you go. If you cannot see the resemblance between this and the visma helmet then you probably also don't believe in evolution of species.
Even though the giro helmet is the most dramatically shaped, all of these crazy things share one unifying design goal, which is to fill in the void between the shoulders and skull. Released in 2016, "The MET Drone’s unique Wide Body, aerodynamic design greatly decreases turbulence and drag around the shoulders."