Transportation is a very important part of our everyday lives. And our trucks, buses, and cars need fuels to run. Right now, the only fuels used by most of our vehicles are gasoline and diesel, which are made from oil imported from other countries.

But sending all this money out of the USA is not good for the balance of trade. And it doesn’t keep the money here to create jobs. And every time there’s a war involving (or near) countries that produce the oil we need, it becomes a threat to our national energy security.

So, by a law passed by the U.S. Congress in 1992, alternative fuels are now part of the official Energy Policy of the United States.