The hon. Gentleman raises an interesting point. Yes, priority does need to be given to the inner city, because that is where we are particularly trying to improve the quality—in the hotspots of poor air quality. There is perhaps also a need to help beyond the inner city, because—this is the point I have been making—people bought their diesels in good faith. Certainly, there should be a targeted approach. One of the problems with the previous scrappage scheme was that it was to boost car sales at that time—it is a lovely position for middle England to decide, “Let’s change our car.” In some ways, there may be a need to target partly by income as well. If we are not careful, a lot of the people who we most want to trade in their older diesels may be those who can least afford a new car. That is perhaps beyond my pay grade, but it is not beyond the pay grade of the Minister, who will reply in a minute.