The Messerschmitt looks to be the same as a velomobile somebody made. Don’t have a pic, but it was just like that, with pedals. Beyond that, there is one that is actually quite similar to your idea:
https://newatlas.com/veloschmitt-195...m=article-body
https://newatlas.com/messerschmitt-k...omobile/59719/
I’d be worried about height of a vehicle like the FUV, but I’m sure it handles just fine. I hope to have a ped/elec two seater of my own someday, and I’d rather shoot for something like Mclaren’s LCC Rocket. In terms of trikes, I really like the 80’s VW Scooter concept.
That bottom vehicle would bewonderful for creating false UFO reports. I really like the shape, but agree on more glass being a good idea.