Change of the oil price

I think the price of oil will be higher and higher. When I came to the USA, the oil price was $2.70 per gallon. However, right now the oil price is $4.05 per gallon. I worried about when I drive a car because of the oil price. I think the oil price has been increasing because many people use cars a lot. So, the world will be changed when we reduce the use of cars. Also, the scientist should make alternative energy, because it will make a reduction of the oil price. However, if the price of oil will be increasing, I will sell my car. I do not want to spend more money. Maybe, I am going to use public transportation when the oil price changer to its most expensive.