Regarding Mr. Dingle, what he was suppose to do with his fuel saving device can not be denied as something in the field of engineering be an accomplishment. It is a pity it ended up differently. However, I would wish to reiterate the ff:

"Fossil fuel, money, other commodities are their to serve the individual, as well as for the well being of society. However, all these are double edged sword, and any of these can be used for good or bad reasons. However, it does not mean that if it was used for one reason, it can not be used for other reasons. This is true in Mr. Dingle's case, it does not reflect that the the HHO system, or any technology for that matter are frauds or does not exist. I know the readers know better than what I am trying to say, just reiterating and thinking allowed. Poor Dingle.