How long do you think it will take before the state is contacting you looking for road tax on the vegetable oil that you are using for fuel? This was the comment that was made this afternoon by a friend that saw the news blurb on this new fuel source on the noontime news. I can see a savings, but the state will see it as needing to have a separate tax on the fuel. They quoted the cost at $800 for the system and $600 for the installation. Claim that the savings in fuel will pay for the unit in one year. They did say that you still have to start the engine on diesel and after it is running, then you make the switch to the vegetable oil.....