It is a folding car of some sort.
I can tell by the creases in the paper.
That is where you fold it up and put it in your briefcase.
It would still be very heavy.
The creator tried to get around that by calling this car "The Napkin"
Unfortunately the concept was drowned when someone knocked over a bottle of Warsteiner.
The "Napkin" took the brunt of the accident and soon became a soggy mess of pulp that was discarded before it could be manufactured.