I think that's too early; I don't think the technology's ready. I do look forward to a time when electric cars become the norm. I don't think the technology's there now in terms of the range, but I think it will become available very, very quickly.

If I remember rightly, 2040 is the target the UK Government has set, is, I think, probably pessimistic, but such is the development of the technology in this field, I think we will get to a position where it will become a realistic option. As somebody who has been driving a hybrid car, the battery in my car only gives me a range of 28 miles. Now, that's the problem. We need to make sure that the technology is right to move ahead, in the way that she has described—she's right.

In the meantime, what do we do? We can't do nothing. Well, firstly, we need to make sure that we remove areas where traffic is idling with engines on—that affects air quality—and, of course, to see more modal shift, and that means, of course, moving ahead with the improvements we're going to see in our rail infrastructure, to make it more comfortable for people to travel by train, in air-conditioned trains that are more frequent, and also, of course, moving forward with the Active Travel (Wales) Act 2013 to make sure that where we see new developments—at cycle paths, for example—they're an integral part of those developments, so that people feel they don't have to travel by car.

So, there are two things: first of all, creating that modal shift, and, secondly, of course, looking to encourage ways to ensure that battery cars have a much longer range in the future, and that it's much easier to charge them, as well, than it is at the moment. I think that's when we can get the real change.