Quote:
|
Yes, but people might be willing to let that be in order to no longer have to go to the gas station (or in this case hydrogen station). Yes, it's not as efficient, but it's cleaner, and much more simple.
|
No, what he means is it's a double-negative energy output.
It takes more energy to convert H2O into H2 + H2 + O2 than it could ever grant converting it back. This means that in a 100% efficiency engine (never going to happen), you would still have an energy loss inside the car itself. So you'd have to plug it in, plus put in water to be converted... which is more inefficient than just plugging it in and going off the electricity.
That is why we have outside power plants that separate the two, then we could use the separated hydrogen as a stored energy source (as gasoline is). This makes the engine more efficient, as it is only responsible for the later part of the efficiency equation (which means less refueling). That also means we could never use hydrogen cars until there is a hydrogen fuel station basically on every street corner, as there is currently with gasoline, or only the very rich or very stupid would ever buy one.