Method and system for controlling a vehicle given to a third party

A system for controlling a vehicle given to a third party, the system comprising:

• a system controller;
• a mode-indicating device coupled to the system controller;
• and
• a biometric authenticator coupled to the system controller, the biometric authenticator adapted to detect at least one biometric parameter at a first dermal location of an operator of the vehicle,
• a substance detecting device coupled to the system controller and adapted to provide a substance level to the system controller, the substance detecting device adapted to detect a level of a substance in an operator of the vehicle at a second dermal location proximate to the first dermal location,
• wherein the system controller is adapted to communicate a driving restriction to the vehicle upon an activation of the mode-indicating device by an authorized driver, as determined by the biometric authenticator, and until a deactivation of the mode-indicating device by the authorized driver,
• wherein the system controller is adapted to restrict the activation of the mode-indicating device unless the authorized driver has been authenticated by the biometric authenticator,
• wherein the system controller is adapted to restrict the deactivation of the mode-indicating device unless the authorized driver has been authenticated by the biometric authenticator and the substance level in the authorized driver, as determined by the substance detecting device, is not above a tolerance level, and
• wherein the driving restriction comprises a limit selected from the group consisting of a limit in number of starts, a limit in speed, a limit in acceleration, a limit in number of minutes, a limit in distance, a limit in gears, a limit in locations, and combinations thereof.