Any HHO topic.
Build what you want, test what you want. The Wright Bros., Edison and many other inventors were pretty much thought of idiots for what we now take for granted today.
This website is all about proving skeptics wrong.
I am sure there are people that think basjoos is full of it about his mileage claims and data.
You can make anything work if you work at it long enough. If it doesn't work, make it work.