California as 18% of US economy / 18th largest country

Now let me tell you a story about the forming limit diagram. California has much more stringent environmental laws than most of the rest of the country, because — let's face it — they are 18% of the US economy. Some people say, well, if they were a nation unto themselves, which they sort of think they are if you've ever talked to some people from California, they would be the eighteenth largest country in the world economically. So they're pretty dominant in many ways. And California will lead the nation as environmentalists, with things like saying we want partial zero-emission vehicles.