Finding the Dream Grease Machine

Months of trolling Craigslist, days of indecision, and hours of "Maybe I should call that guy in Timbuktu?" have finally come to a close. On Tuesday, I found a beauty of a 92 VW Jetta listed two hours from Monterey. I made the call and headed up there that evening. The car is beautiful-in mint condition. Now, the big problem is deciding how to drive it around the country- veggie oil? biofuel? There seems to be a very mixed consensus on what is best for the environment. My next step is to do some serious research...