 I don't think the rubber in the sunshine is a big deal. Your track position is. So if you're in the back, as you move forward, the balance of your car is going to need to get a little bit tighter. You've got to be freer to run the dirty air. As we talked about with Brad Keselowski, his car is turning really well right now because he's got clean air. If you're sorting track position, coming from the back forward, you're going to have to keep up with that and get your balance right.