I was wondering how it worked exactly.. the kind you put ontop of your gas tanks? They look cool, but I never understood it 100%. I think I have an idea of how it works but not sure. Also, can I just use a normal red plastic gas can or do I need one of those special cans? What are some benifits of having it, mnus fast fill-ups at the pit stop? Thanks guys.. and remember, I warned you, there stupid questions... its just something I have been courious on for a while now. Thanks guys! Colton W.