> If people are afraid of releasing the car's code, the agency doing the emission testing could make it a bit less obvious when the car is being tested. That wo

> If people are afraid of releasing the car's code, the agency doing the emission testing could make it a bit less obvious when the car is being tested. That would make it harder to cheat. I'd say requiring the release of all source code involved in or connected to control circuitry in the car (i.e. anything other than in-vehicle dash systems that are completely isolated from CAN, etc.) would be reasonable. The safety concerns outweigh any proprietary benefit to the companies involved. It would also create a lot of pressure for the manufacturers to actually isolate the non-critical value-add parts from the critical keep-the-car-driving parts, which would increase security.