DUH! Water Power - why now?

Welcome to the future - now why the hell did it take this long to get here?

I only wonder why in the HELL this has not been applied before. I learned about electrolysis in high school, and it must have been taught for SO LONG, why is it just now making news? I suppose the process has not been efficient enough to produce a significant amount of energy.

When the concept was being taught to me, i asked what the byproduct was of burning hydrogen - and the answer was water... and i thought to myself, "this is amazing! the byproduct is the fuel!" -- why it didn't click enough to do something with the concept, i'll never know.

petrol companies, beware...