Alternative Fuel... this is the the biggest joke ever. There will never be an alternative fuel... and I repeat... EVER!!!
You make your water, electric, bubble gum, whatever engine you can think of...
The the oil king's come to you and say...
"Do you want a billion dollars for that invention?"
"No, I'd rather help humanity, and make my money that way."
They reply with a simple, "Ok, thanks for your time." and a smile.
You then disappear.
This all equals Never, ever, ever, EVER, EVER, EVER, EVER ANY alternative fuel source... unless you build it in your basement, and don't tell anyone about it.
Good luck.