The only thing about having Ice Cream delivered is you miss all of the fun stuff like shakes and quakes (type of blizzard at local ice cream shop). That is why I would only buy pizza, and then go to the ice cream shop. Now if you make an ice cream shop on wheels that sells like actual ice cream and not popsicles type of things, then you're talking!
EDIT: Shwans costs so much in my town! I would rather burn then pay 2.50 for a popsical. But that is me personally.