Gas Prices Are... Low?

I just wanted to say how astounded I was when I saw the Casey's General Store's sign saying that unleaded gas was $2.29 a gallon and super unleaded is $2.19. Wow. I can remember during the summer when I refused to drive, because the price of gas was $3.89. Down a $1.70 now I feel as if it's a bargain. My question is how long will this last? Will spring come and shoot it back to the $3.00 range? I have absolutely no idea, but I guess as drivers all we can do is enjoy the low price, I guess low for what we're used to, and roll with it.