A member in chat last night suggested some kind of simple interior sliding 'pull screen' set up...
Giving you both options of moon and stars at night and protection on hot sunny days.
It could actually be fitted into small runner grooves on the frame tubes...
Someone needs to figure out a design and material that would not end up flapping in the wind.
Maybe heavily tinted spring loaded rolled up vinyl similar to the visor material shown in Rick's picture?
No... wait. Too complicated. Scratch all that. We need the whole thing to be one giant transitions lens.
There actually is photochromic film for auto windows available out there. But it looks like it has serious limitations.
Something even
more effective is 'Smart Tint' electrochromic film. DIY with your choice of seven colors.
http://www.SmartTint.com
If it would be possible for Arcimoto to be even cooler than they already are...
They could contract out their poly roof material to be infused with photochromatic dye.
OR... Have have their poly roof made in a 'Switchglass' sandwich configuration.
But the simplest and best solution would be for them to offer a factory 'Smart Tint' installation option.
Just turn the dial and make the canopy as opaque as you want whenever you want.
The thing that got me is that it's "dimmable".
Another important consideration is how long will it take...
For those beautiful FUV seats to deteriorate if they're left sitting in the direct sun?
Any one of these would get a lot of worldwide attention!
And make your FUV the coolest one in town.
Now THAT would work.