Abstract: A telemetry system coupled to a vehicle can communicate with a remote site using the overhead control channels of a wireless network, such as a cellular mobile radiotelephone network. The telemetry system can monitor or control aspects of the vehicle's operations based on remote user input. The telemetry system can take steps to reduce its consumption of electricity. When conditions warrant, the telemetry system can disable a driver's attempt to start the vehicle. A relay can consume minimal electricity until an unauthorized driver attempts to start the vehicle, at which time the telemetry system can energize the relay to interrupt the starting sequence. The telemetry system can monitor a driver's driving practices and report incidences that meet preset criteria, such as violating a speed limit for a selected amount of time or a crossing of a geographical boundary.