1. A method of controlling use of vehicular Wi-Fi hotspots by a handheld wireless device, comprising the steps of:(a) detecting that the handheld wireless device is communicating via a Wi-Fi hotspot;
(b) determining at the handheld wireless device that the Wi-Fi hotspot is provided by a vehicle, including:
(b1) comparing a received identifier of the Wi-Fi hotspot with content of a database containing vehicular Wi-Fi identifiers; and
(b2) identifying the received identifier in the database containing vehicular Wi-Fi identifiers; and
(c) enabling one or more default prohibitions against transmitting low-priority data from the handheld wireless device to a remote server via the Wi-Fi hotspot provided by the vehicle and a cellular wireless carrier system to which the vehicle is connected while the handheld wireless device communicates with the Wi-Fi hotspot provided by the vehicle.