They've had a few female drivers over the years but none have been successful or talented enough to compete. I know
Deborah Renshaw was running the NASCAR truck series for a bit. I heard some things about her moving to the Busch series (first one below the biggie, Nextel Cup Series) but I guess that didn't happen. I don't think Ashley Force would move to NASCAR. Say what you will about the sport there's huge difference from driving a supped up car in a straight line for 10 seconds as opposed to racing a car for three or fours straight.