The Oil Problem is Solved

Here's something amazing. Reseachers have been studying alternate energy sources for how long? They've come up with Hydrogen power, Water power, and Hybirds. How come this guy figured out the cheapest solution? How come no one knows about this? Diesel fueled cars were originally designed to run on peanut oil? Some guy is converting desiel cars to run on used vegetable oil from fast food restaurants. Let me repeat that. VEGETABLE OIL. I wonder if the converted cars still pass exhaust inspections...