Yes, it's a prototype. But it's from a company that has built countless production cars, and which also produced a road-legal limited production run of a pretty similar car (just with ICE instead of electric): https://en.wikipedia.org/wiki/Volkswagen_1-litre_car

I'm pretty sure they could bring this to market almost immediately, if there was a sizeable market for this kind of vehicle.

Aptera on the other hand has been around for a long time now, changing their product strategy every now and then, making announcements... I wish them all the best, I really do, but until they actually ship something, I will also stay skeptical.