First Minister, there have been concerns expressed from some quarters that we may be putting all our eggs in the electric basket and the electrification basket in terms of rail and cars at the very point when some countries are moving fast towards a hydrogen economy. I suspect that, over the medium term, it will be a mixture of both that will provide the carbon reductions that we need. Will you undertake that you will look, in the first instance, for exploring the potential for hydrogen fuel on freight, railways and buses? I think it was Simon Thomas who mentioned the M4 as a potential hydrogen highway. And looking beyond that, clearly, we are moving down the line of electric vehicles at the moment. There were all sorts of issues with providing electric charging points in the early days of electric cars, and there are still some issues there. In the future, hydrogen cars might be much more of a reality. Have you done any provisional work in terms of developing our highways, developing the infrastructure for a potential hydrogen future, not just in the case of trains and buses, but also in the case of cars as well?