Danica Patrick is the most successful woman in the history of American open-wheel racing. She recently made the switch from IndyCar to NASCAR, but she’s looking right at home in stock car racing. Danica took the pole and a top 10 finish at the 2013 Daytona 500. She has scored a ton of endorsements deals because of her “girl next door” good looks. Thankfully for us, she doesn’t seem to mind unzipping the racing suit and showing off her winning form. She is 29 years old.