And that is saving money! On Christmas Day i will be going to New Brunswick to see my family and I might drive my car there. So I've been wondering if my brother and I take my car (my brothers coming too) is it cheaper to split the gas or one of us pay every time we get gas. So say I put 30 dollars of gas into my tank and I pay 15 and my brother pays the other half, would that be cheaper (for me) then having to pay the whole thing myself?