These were deep reductions of 20% energy efficiency in an industry that had been achieving 1% a year. This was a big pop.
As for the longer term, if you're looking out to 2030, for example, we're going to have to have some technological breakthroughs, inert anodes or something, that will fundamentally change the way we make aluminum. We're also going to have to get involved in life cycle analysis, looking at what the best application is in terms of downstream greenhouse gas saving capability of different materials, from plastics to steel, to aluminum, to composites.