the road well tonight there is outrage from the government here in berlin and calls for a federal probe critics saying that german carmakers have used the same tactics as tobacco companies to convince consumers that a harmful product is really a good deal. here at the university clinic in africa in two thousand and thirteen and fourteen a group of twenty five healthy people were made to inhale nitrogen dioxide in varying concentrations over periods of hours several times a week the car manufacturers wanted to use the tests to determine exactly how dangerous nitrogen dioxide was to humans the tests were commissioned by the european research organization for environment and health and financed by german carmakers v.w. b.m.w. and german parts supplier bosch the study was supposed to be conducted under the cover that they were to be no negative effects on the human subjects but the methods which have now been revealed have let loose