shortly after funding was finalised for stuttgart 21, the political opponents of wolfgang schuster were quick to condemn him for backtracking on a promise made during the mayor elections of 2004 - namely that he would allow the population of stuttgart to decide the fate of stuttgart 21 if the additional costs of the project for the city of stuttgart amounted to more than €200 million. the agreement contained a provision that the local government would have to participate in covering a cost increases possibly up to an amount above €200 million should the actual project costs significantly exceed planned costs. the greens subsequently accused schuster publicly of breaking his word. schuster responded that the projected cost increase for the city of stuttgart amounted to €84 million and thus significantly less than the amount for which he had promised a referendum.