System and method for providing vehicle-based services. Hailed vehicles are arranged to provide food, massage, medical, and parcel-delivery services. Using a ship-to-vehicle method, a parcel is delivered to an occupant of a hailed vehicle. In one aspect, a ship-to-vehicle option is presented in a purchasing interface. In another aspect, an alert signal is presented in a vehicle-hailing interface when a parcel is ready for delivery. Options are also provided for a user to select a trip segment as a parcel-delivery window.