And BTW, California is probably the strictest environmentally in the world, if not the nation. And even in the US, not many are following. So I highly doubt anyone will follow the US lead.
Really, the only way they will follow is if you pay them. Because as you can see just by gas prices, no country will want to pay an extra amount a gallon to be environmentally conscious like the fools, I mean citizens, of California. And the US ain't got no money.