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You can pick up the used cooking oil for free from lots of fast food places. They need to get rid of it, you want to use it. You can end up running your car for a couple of weeks on a weekend of work in the garage. There are also a few small companies (maybe cooperatives is a better word) that are producing bio-diesel to sell commercially. Sure it isn't as economical as regular diesel yet, but it is great recycling and renewable source energy.
I recall reading an article a couple of years ago about a family in Colorado who was slowly converting their house to run off a combination of natural renewable sources. The guy was burning used cooking oil to heat the house, had a solar hot water heater, some photovoltaics, and a wind power generator. Every month their utility bills kept creeping down and down, until they were close to zero heading into winter. The power company sent out two technicians because they suspected that the guy was stealing power by sabotaging the meter or something. The guy ended up giving the technicians a complete tour of his house and all of the cost savings ideas he was using. Very cool.
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You do not really understand something unless you can explain it to your grandmother.
- Albert Einstein
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