http://www.theregister.co.uk/2015/09/25/vw_pollution_just_the_tip_of_the_iceberg_whos_to_blame_you_guessed_it_hippies/
<quote> Volkswagen is being rightly condemned from all directions, as its methods were particularly cynical: its engine software would sense when the car was in a test environment and cut back NO_x output temporarily. As soon as the car was no longer under test, the car would change mode and emit huge amounts of NO_x. This wasn't done for no reason – if a machine is allowed to generate NO_x freely, it can be very fuel-efficient – and thus, of course, its carbon emissions can be very low too. </quote> Comment: Probably best defense for VW lawyers is: "We got hacked and the hack made this. We take sickyouareity seriously"
