If you missed Jason Torchinsky's Jalopnik story about water-powered car hucksters of past and present, here's your chance to read it.
The idea itself— to build a car that runs on ordinary water— is total crap, scientifically. It violates at least one law of physics, and pisses off a few others. But the idea behind the idea— a car that runs on something so plentiful and cheap it’s almost valueless— will never go away. It’s just too tantalizing to give up.