Bills... Advice

So right now, I have two years left on my car payment which is $300 a month. After all my bills are paid, I'm coming out about $500 ahead a month...I have been saving that for upgrades on our house... Siding, roofing, yard work. I've been thinking now, maybe I should double up this whole year on car payments so it would be paid for by the end of the year which would still leave about $200 left a month, give or take, to put in savings.