Drive-throughs are serving more than just a Big Mac these days and are increasing companies' sales at the same time, USA Today reports. As drive-throughs expand beyond fast-food and enter other realms such as designer coffee and fast-casual chains, sales for those companies are growing. Drive-through sales were up 3 percent in 2011 and up 2 percent in 2010, according to a report from researcher NPD Group. A good example of the fast-casual restaurant trend is Panera Bread, where the drive-through...