The rule to cut down carbon emissions in the fuels used by automobiles and improve the market with environment friendly gasoline alternatives was adopted in California. The importance of this move is that it is the first time in the whole world where the Government has attempted to do so in the field of automotive and transportation fuels. This move is also known to be of historic importance as the other countries are likely to join this revolutionary change. Gov. Arnold Schwarzenegger said this not only will reduce the global warming but also will be helpful in cutting the pollution rates around the world. This will also encourage consumer choice and improve the private investments.