Looking for an alternative to overpriced hybrid, electric, and hydrogen-powered cars? Grab yourself an old diesel and the Greasecar Vegetable Oil Conversion System ($TBD). The kit comes with everything you need to convert your diesel-powered car or truck to run on waste vegetable oil. That's right, we said "waste" vegetable oil, meaning the kit is not only green, and helps to reduce your fuel costs, but it also gives you another excuse to eat fried foods. It's a win-win.