SERVICES TO ITS MEMBER UNITS-NAMELY, ARRANGING FOR INTERCHANGE OF MECHANICAL SERVICE IN CITIES THROUGHOUT THE UNITED STATES ON AUTOMOBILES RENTED BY SAID MEMBER UNITS; PROMOTION OF AUTOMOBILE RENTALS BY MEMBER UNITS THROUGH DIRECT MAIL CAMPAIGNS, PRESS RELEASES AND PUBLIC RELATION PROGRAMS; PROTECTING MEMBER UNITS AGAINST STEALING OF THEIR RENTAL CARS BY THE COMPILING AND DISTRIBUTION OF BAD RISK LISTS, AND AIDING IN THE RECOVERY OF STOLEN RENTAL CARS BY COMPILING AND DISTRIBUTING TO PROPER AUTHORITIES LISTS OF CARS RENTED BY SAID MEMBER UNITS AND WHICH HAVE BEEN STOLEN