I've raced harder this year than I've ever raced before. You...

I've raced harder this year than I've ever raced before. You think you're doing all you can. I've always felt like I've given 100 percent, but you're put in certain situations and you find you're capable of doing more. Hopefully, I still haven't realized my full potential. I feel like I've got a lot to learn and as a driver I can get a lot better and each year I understand there's more to me than I even thought I had.