That would be the ideal solution, but I can't see the Government getting around to it anytime soon, unless there was significant public pressure. And unfortunately the UK public on the whole don't love us. They envy us, but that's not the same thing!
So I feel our pressure is better applied within our industry, for some fresh thinking from converters about materials and construction methods to get weight down and payload up.
But consumers, to, need to think again about what they need, and ask for it. I've lost count of the times I've seen people telling us on various fora that they never use the van's shower, or oven. Sometimes even the loo! So why have those things?