They sure are.
From: Wikipedia
"The Trabant was a steel monocoque design with roof, bootlid, bonnet, fenders and doors in Duroplast, a form of plastic containing resin strengthened by wool or cotton.
The duroplast was made of recycled material, cotton waste from Russia and phenol resins from the East German dye industry making the Trabant the first car with a body made of recycled material."
Now you can see why they were er.. adjusting the panels.
Cheers

