GrubHub is an eCommerce application that enables users to choose a [participating] coffee shop within a certain radius, and place an order remotely.
The user may wish to place an order when they are 5 minutes away, should they be on a tight schedule. The user may instead wish to bypass an existing queue, and place an order while they are at their table.
GrubHub combats queues within coffee chains, and creates a seamless, yet manageable approach to ordering.