What a novel idea! We've done it here with Cupcake Project, that is combining ice cream and cupcakes into yummy creations (if you haven't heard about our annual Ice Cream Cupcake Contest check it out here) and now there is a storefront in the Washington DC area, YOCAKE, that dishes out froyo and cupcake combinations in one tasty cup. Plus you can add toppings like a sundae. Seriously....sounds like road trip time! Unfortunately we haven't actually been there yet but hopefully someday we will because it sounds just fun to go to. Lots of Froyo flavors both sweet and tart options and so many cupcakes to choose from.