"One thing that IS different, I've never had anyone at our GTGs ask me to check out their exhaust aroma. Biodiesel exhaust really does smell edible, sort of like roasted peanuts.(and uncombusted it smells like latex paint). (For those who don't know, you really CAN burn modified french fry oil in these cars, kinda neat really)" "Roasted peanuts"? ROTFLMAO!!! Joshua C.