Is There a Cap and Trade Model?

You pay the true cost of whatever thing. So if you want to put a subsidy into, to reduce the cost and keep the price of gasoline artificially low, then you're not going to get any progress on CO2. And so all the costs that go into it have to be factored in, and then make, and charged accordingly. But I think it is about monetizing this, ultimately,. The true life cycle costs are incorporated in evaluating any alternative.