Hydro not smart
First of all the last I checked hydogen is not a renewable fuel source. (the major problem with fossil fuels) Second it is highly combustable much more so than gasoline. As for the actelyne I prefere to use propane on my cutting torch but either way I don't drive around all day with them in my car. Also think how big the crater would hve been in Oklahoma City if that truck had had a full tank of hydrogen sitting under it.