Humans always adapt in whatever situation. But right now there is already technology that can make things happen. It's just the government that is preventing all things from happening. For example, the car powered by water (hydrogen), this kind of technology was already patented a long time ago. Still, the big oil industry is stopping it from prospering since it affects the economy.
Comes a time when oil is no more I guess we'd be using water already. AFAIK Toyota already has hydrogen cars.
There are several unlimited resources, such as Water, Air, Sunlight and Sea, and experts in our country have thought about it in order to anticipate a shortage of resources from electricity and fuel oil, but the government has not allocated all of them, because they cannot guarantee about productivity from unlimited resources, which will cause deep anxiety for all of us, one day electricity and fuel oil will disappear. We can already anticipate this when we now start little by little starting from non-existent natural resources. Finally, we can practice from now on vehicles that use hydrogen so that later we won't be too indifferent when electric power and fuel oil disappear.