The price of gas rises and falls on the overall world demand for fuel.
Only a very few years ago, the price of oil fell into single digits when Asia went into recession, the so-called "Asian Flu" of the late nineties.
It is being driven above 50 by the reverse of that dynamic, as the Asian economy becomes more dynamic. When a billion Chinese, and a billion Indians, and a billion others in another handful of Asian nations become more economically active, it has a very direct effect on the price of not only oil, but steel and concrete as well.
Drive your SUV all you want, leave it running all night while you sleep, compared to what is happening in the rest of the world it makes no difference at all. None. Its like worrying about the effect your refrigerator has on global warming. You can worry about it if you want to, but you're wasting your worry-quota on something that makes no difference.