The Ford Fiesta has been a huge hit in Europe, where its small size and fuel efficiency have won it praise and, more importantly, sales. Now it’s on its way to the U.S. as soon as 2010, where Ford hopes to duplicate its European success. Cars.com’s Kelsey Mays had a chance to check out the Fiesta at the 2009 Chicago auto show, and he runs down what Ford will need to do to make the vehicle a hit.