How come none of these articles in the VW dieselgate wake mention previous identical scandals in this area that make me skeptical that anything will realy be do

How come none of these articles in the VW dieselgate wake mention previous identical scandals in this area that make me skeptical that anything will realy be done about it? Took me less than a minute to Google (from 1998!): 'Car manufacturers can use modem electronic equipment to adapt the engine to any type of test cycle. They can even tell the computer of the car how to recognise when the car is being driven according to a specific test-cycle and adjust the combustion accordingly. It was this kind of software that six truck manufacturers, including two European firms (Volvo and Renault), recently used in the United States to defeat the EPA's pollution control. As a result emissions of nitrogen oxides from highway driving increased by 300 per cent. " extract from: 'Cycle Beating and the EU test cycle for cars' - Per Kageson - European Federation for Transport and the Environment - November 1998