Dunno what you mean?
VW have just spent millions maybe tens of millions as a PR exercise. What is applicable for the road will then have to be back engineered. Much of the car will never be relevant to a family hatch. I would prefer they spent the money on developing a road car first and then take that to the Peak and see what they can do with it, refining over the years just like the majority of the competitors.
Call me cynical, but VW and most likely all the car companies were given a standard to meet and they made cars that would pass the test not cars that were more environmentally friendly. From a business point of view I understand. If they made cars that were slower, more thirsty etc… people would not buy them, but they were trusted to meet the spirit of the standards. Other companies used different methods to pass.