This is it, here in Lafayette, LA, the last survivor of a chain of ice cream shops once run by the now defunct Borden's company (the brand name, and mascot Elsie, is still in use by various companies around the country).  Borden's Ice Cream of Lafayette (see the Roadfood.com review) is now a spiffy, locally owned ice cream parlor where you can enjoy classic sundaes, cones, and sodas or, as we recently did, a chocolate malt and a root beer float:

Our soda jerk put so much ice cream in our float, she offered to add more root beer as we got low!