3 years ago I decided to get rid of my gasoline guzzling SUVs and purchase a used volkswagen golf TDI that runs on diesel instead. This was the best move I've ever made in my life. (Well one of the best at least) A chemist friend taught me all I needed to know about how to make it. It costs me on average around 80 cents per gallon to make it, and it costs around 100 dollars to purchase the equipment to start making your own. All the information on making it can be found on the web. If you can bake a cake; you can make your own biodiesel. Instead of using a finite fuel source like petroleum; biodiesel can be made from waste vegetable oil. My father-in-law owns a restaurant and he gives me all his grease trap oil. You can call around restaurants in your area. Most will be glad to give it to you for free, rather than having to pay a disposal company to collect it. If you're sick of spending hundreds of dollars a year on your gas guzzler, consider purchasing an old used diesel car. They get better MPG than most gasoline cars, and you can make the fuel yourself! It's also great for your engine, even if you only add a fraction of it to your regular diesel. It acts as a lubricant and will in the long run make your engine last longer. My car is at 230,000 miles and still running great - no engine problems whatsoever. Give it a try.