However, the normal approach to plasmonics doesn't work with hydrogen.

But how could you be sure it was filled with hydrogen?

High power generators are often filled with hydrogen in order to cool effectively.

Reduce it with hydrogen and it's ready to go again.

As i understand it the problem with hydrogen is storage.

No long lines of customers were waiting at the pumps to fill up with hydrogen, though, and there probably won't be any for years.

The engine room was filling with free oxygen and hydrogen.

In order to form water, oxygen must react with hydrogen.

"Until something happens with hydrogen, or fuel cells, I think this is the bus of the future."

For this reason, there are growing efforts to replace gasoline with hydrogen.