The Obama administration is calling for changes in fuel standards.
On Friday it proposed restrictions on emissions and how much sulfur is in gasoline. The goal is to decrease pollution. Experts say it would be so effective, it would be as if there were 33 million fewer cars on the road in America.
The Oil Industry isn't happy about the proposal. It warns it would cost money to change how oil is made. It estimates the price of gas could go up by 1 to 10 cents per gallon.
Supporters of the proposal say you would see savings in other places. Automakers say the proposal would help cut production costs by creating a nationwide standard for fuel. Clean air advocates say the restrictions would improve public health, and save billions in health costs.
The changes would go into effect in 2017 if approved.