The current average car age in China is about 5 years. Which means, the cars delivered from 2023 to 2027 will likely represent half of the cars on the road by 2027. So for half of the cars on the road, they are about 60% NEV. For other half of the cars on the road, let's they are 15% NEV. In total, it would be bout a 65%/35% mix of ICE to NEV cars on the road. If we assume there are some aggressive cash for clunkers trade in, it's not hard to see 60/40 split of ICE/NEV cars by 2027 vs probably 90/10 split right now.
I don't see a requirement for an aggressive cash for clunkers programme in China. It will just end up scrapping perfectly good cars that could be used in remote parts of China or exported as used cars in developing countries where there isn't the electric charging infrastructure yet. Plus you're only talking about a difference of 30% to 35% in terms of the overall NEV fleet, which doesn't change the strategic calculations very much.