“Welcome to the Utopian Gigafactory,” reads a banner hung across a path in a Brandenburg Forest outside Berlin, Germany. At the end of the path, Tesla’s very real Gigafactory is visible behind the trees. The banner has been hung by activists of the “Teslastoppen” (Stop Tesla) initiative, who have occupied part of the forest since late February, aiming to prevent Tesla from expanding its only European Gigafactory.