The right hon. Lady is right about the global figures, but surely she is concerned that emissions from transport have gone up and, as I said earlier, aviation emissions have risen significantly. Aviation is covered by international agreements, but we can do something about transport in this country. Does she accept that motoring overall has become cheaper and that the cost of public transport has significantly risen? If so, what will she and the Treasury do to ensure that we encourage motorists to take the cheapest and least environmentally damaging form of transport, saving on carbon emissions? Surely there must be a strategy for dealing with that aspect of emissions.