I agree, but I think 20 mph zones in urban areas would tackle that problem, although I appreciate that some of the most dangerous driving is done on infrequently used rural roads.

Gareth also made the point that fast-food outlets mean there's a cluster of additional vehicle movements, and I agree that more attention needs to be paid to this sort of thing in planning considerations. Councils building on green spaces without the transport links is absolutely a no-no as far as I'm concerned, and he also questioned whether the active travel Act had been effective.

He also said that if we banned diesel and petrol cars tomorrow, we'd have chaos—we simply don't have the infrastructure. Well, I'd just like to point out to him that tomorrow there will be a clean air zone in force in Cardiff for four evenings this week, starting tomorrow, in order to manage the Ed Sheeran concert at the millennium stadium. So, it's perfectly possible to do, if we have the will to do it, and I'd like to encourage Cardiff council to do this more often and not just when there are major entertainment events on, when we wouldn't need to be disrupting the public transport, which is a major disincentive to people leaving the car at home.

David Melding rightly pointed out the important contribution to public policy that the Conservative Party has made with its urban regeneration strategy that's been supported by various organisations like WWF and the British Lung Foundation. He also pointed out that Cardiff and Port Talbot have higher levels of air pollution than Birmingham and Manchester and that that should trouble us. He acknowledged that it's human activity driving the problem and, therefore, it's perfectly possible that we have solutions.

Julie Morgan pointed out the numbers of people in schools in her constituency who are close to major roads, particularly around the Gabalfa roundabout, and the people travelling into Cardiff by car. I have to say that's a feature of—the nine most polluted schools in Cardiff are all near major roads. Some of them, we can imagine proposals to dampen that down, but in other cases, it will be about reducing absolutely the number of commuters. 

John Griffiths talked about the need to convert our taxi fleet to LPG, and I'd point out that taxis in London will have to be clean by next year, and private hire vehicles will have to be clean by 2020. So, if they can do it, there's no reason why we can't do it. This is something where we're oversupplied anyway, so we need to raise the bar. He pointed out that the metro could have a possibility of achieving modal shift, but it won't happen overnight. Sadly not. Many of the proposals that are being offered are things that won't happen for the next five years, so we have to do other things in the meantime: 20 mph speed limits would encourage more walking and cycling, and also tackle obesity as well as road traffic accidents.

Dai Lloyd, interestingly, highlighted the impact on the unborn child because of the air breathed in by pregnant mothers. We previously tolerated unclean water, we no longer do. We shouldn't now be tolerating unclean air.

Dai Rees reminded us that Port Talbot is not the most polluted town in the UK, but I would remind him that the plume goes up to Maesteg, where one of the highest levels of child asthma is being suffered, so there are some problems around industrial pollution—some are historic and some are current—and there are complex issues around how we resolve them. We have to, I agree, seize on solutions that don't create new problems and have unforeseen consequences.

The Minister agreed that we need consensus. We've got the consensus to take action, certainly amongst those who spoke, and we need to ensure all our colleagues are doing the same. We don't have time to mess around, we absolutely have to seize the moment and take action now, because we are impacting not just on today's children, but future generations, as well.