(a) An employer shall not be liable for injuries to passengers and other persons resulting from the operation or use of a passenger car or commuter van in a ridesharing arrangement which is not owned, leased, contracted for or driven by the employer, and for which the employer has not paid wages to an employee for services rendered in driving the vehicle, provided, that wages shall not include a portion of the fares collected by the driver and shall not include expenses for gasoline or passenger car or commuter van repairs.
     (b) An employer shall not be liable for injuries to passengers and other persons because he provides information, incentives or otherwise encourages his employees to participate in ridesharing arrangements.