This doesn't affect any normal person's right to resell their car, unless they personally arranged for the import of the car against the wishes of the IP owner of the car.
I suspect in most of those cases, the car manufacturer chooses not to import the car because of regulatory issues or because it doesn't think there's a large enough market for that type of car in a given country. Car manufacturers generally don't care about such sales.
The grey market sales various businesses do object to usually have to do with geographic price segmentation. It doesn't seem ethical to me for governments to help companies protect that business model.
