Patent ID: 7266507

Claim:
A method of enabling and disabling a vehicle in response to payments being timely made, comprising the steps: a) computing a payment due deadline; b) generating a reference code which corresponds to said deadline; c) providing said reference code to a comparator; d) receiving, via a keypad at the vehicle, an additional code; e) passing said additional code to said comparator; f) comparing said additional code with said reference code; g) disabling said vehicle if agreement between said additional code and said reference code is not detected prior to said payment due deadline; h) enabling said vehicle if agreement between said additional code and said reference code is detected, wherein said disabling step disables a system which supports causing ignition in an engine of said vehicle, said system includes only components not dedicated to directly causing a spark to initiate combustion; and generating a next reference code which corresponds to the next payment due deadline if an agreement is found between said additional code and said reference code.