The fuel shark is a simple and affordle new tool for your car that cuts cash off your gas bill. The fuel shark unit is more than meet the eye. This little gizmo plugs right into your car lighter and helps your car run better and save money on gas. Learn more by reading fuel shark reviews. Fuel shark creates a clean electrically enivroment for your car allowing it to run more smoothly and effieciently or at least that is what I have read. It all sound good to me but does it work? They say they have test it sucessfully with tens of thousands of consumers. I recently placed an order and I am looking forward to seeing what this new product has to offer for my gas guzzler. As soon as the fuel shark arrives I will fill you in. I have tried numerous things in the past but like fuel cleaners but it is so hard to tell. If you have tried the fuel shark or anything else that works please let me know I would love to hear your thoughts.