Professor Hannah Daly:

I thank Deputy Bruton for his questions. On plug-in hybrids, it is important to understand that people do not plug them in as much as the tests assume.

On labelling, if I understood the question correctly, the Deputy asked whether we can label cars with their lifetime emissions and fuel consumption. That would be a straightforward thing to enact because we know from vehicle testing what they emit per kilometre and there is a standardised advertisement of weight, known as the kerb weight of a vehicle, when it is sold. That would be a straightforward thing to add to cars at the advertising stage. It would also be straightforward to include weight as a component in the vehicle registration tax. Norway has done that, for example, along with carbon dioxide and nitrous oxide, as we have done. It would be a straightforward part of calculating the tax. Advertising information-----