Unlike some of the time-travel movies I love like 'Primer' or '12 Monkeys ' 'Looper' is not about time travel. It's about this situation that time travel creates and the people dealing with that situation. So narratively the big challenge was to have time travel get out of the way.
I just go where my heart tells me where my gut tells me to go where I'm enjoying my life the most where I feel like I can have the most success. I've truly enjoyed my experience in NASCAR to the point that I want to do it full time.