Abstract: The invention is directed to an RF means for terminating the normal operation of a selected motor vehicle. A plurality of motor vehicles each have an RF receiver tuned to a frequency and EIA tones specific to their license plate indica. Selected other motor vehicles have an RF transmitter and EIA tone generator which can be selectively tuned to transmit a signal which is receivable by a selected one of the motor vehicle receivers and when received stops the operation of that selected vehicle by terminating the fuel supply or removing ignition voltage to the motor vehicles internal combustion engine.