If you all have the money, I'd suggest that when the gas prices get low enough, you should buy it bulk. They will let you pump gas for that price each time you go to the pump until it is used up.
It's around 3 bucks here, varying from gas stations around the college. Hopefully it doesn't go too far up. But, since the other Midwestern states seem to be having rising prices, it wouldn't be too difficult to suggest an influx in price.