The invention relates to a device and system for preventing improper use of a car. The device uses an electronically controlled fuel shut off system located internally of the fuel tank. The system requires the operator of the car to enter a private identification number or PIN code in order to operate...http://www.google.fr/patents/US5861799?utm_source=gb-gplus-shareBrevet US5861799 - Car theft and high speed chase prevention device
