This is probably posted here because of some similarities with Tesla's Cybertruck (namely, the square angles in an electric car).
The Citicar / Comuta is similar: https://en.wikipedia.org/wiki/Citicar
On the other hand, they were made from fiberglass or "plasteel" (a composite of fiberglass and steel), and I'm not sure how mouldable that material is.
From the Gurgel wiki description:
> its specifications were comparable to similar models of the time (see CitiCar).
I wonder which came first.
The citicar was produced from '74 while the gurgel was only presented in '74, and never actually commercialised.
I expect the specs they're talking about were mostly bound by battery technology.