I’ll grant that many “alternative” fuels do have potential, although most aren’t anywhere near being cost effective.
The United States has vast quantities of Oil Shale deposits. The extraction process is expensive, but if oil gets up to $100/barrel, it would become cost-effective. My point on this is that the rising cost of energy is likely to be incremental rather than sudden, as there are sources that can pick up the slack as the price of energy rises, at least in the short term.
I’m extremely skeptical of the “car that runs on water”. Somewhere you need a chemical reaction that gives off energy, usually by breaking bonds. My guess is they’d be trying to create Hydrogen gas (H2) and then break the hydrogen-hydrogen bond (which gives off energy – hydrogen gas’s flammability is why the Hindenburg exploded). But you’d have to put energy into the system to turn the water into hydrogen gas.
Also, it’s not like water is an unlimited resource… remember, we have a SHORTAGE of water here in Southern California.
