If there is one thing that unites people right across the New Labour coalition it is their attachment to the motorcar. And they will break their attachment to politicians who try to force them out of their cars before they will break their attachment to the car itself. So, if cutting carbon emissions from motorcars is vital, the challenge is clear. To stay in power long enough to achieve it, we have to strike a ‘new deal’ with the motoring public.

Motorists understand the need to raise money from fuel duty but they don’t believe the fuel duty escalator and recent changes to road tax are fair. So let’s start the process of striking our deal with the motoring public by scrapping the fuel duty escalator and replacing it with a duty moderator that recognises that when the price of fuel goes up the exchequer’s VAT take increases and the rate of fuel duty can go down.

Second, a ‘green’ tax that you cannot avoid by changing your behaviour is not a ‘green’ tax, it’s just a tax. So, in future, changes to excise duty aimed at encouraging people to drive cleaner cars should never bite on vehicles already on the road but always to new vehicles.

Third, we should announce that over the next five or six years (the time needed for vehicle manufacturers to realign their production) we will introduce a ‘feebate’ system which imposes a significant tax on the purchase of polluting vehicles but uses the money raised for a substantial tax credit to reduce the cost of clean vehicles. The scheme should be revenue neutral so it is clearly a green measure and not a stealth tax.

Fourth, all heavy goods vehicles, including foreign registered ones, should be made to purchase a daily vignette and the money used to reduce excise duties on heavy goods vehicles registered in the UK. Foreign hauliers would be seen to be contributing to the cost of our roads and UK hauliers would become more competitive.

Lastly, a huge and rapid extension of active traffic management and hard shoulder running, paid for by rescheduling the road building programme, will have a major impact on congestion. We’ve already made encouraging noises in this regard but we need to be bolder to deliver short-term benefits.

In the long term, road pricing will have to remain part of our vision for tackling congestion – we are a small island with 34 million vehicles on our roads already – but we need to make it clear it won’t happen without public support. That will mean being absolutely clear that any money raised from road pricing will be used to reduce fuel duty, for investments in popular public transport schemes such as guided bus or light rail or to reduce the cost of public transport. If road pricing is seen to equate to extra revenue for the Treasury, we can forget it.