A COUPLE WAS UNINJURED WHEN THE PLANE THEY HAD RENTED WENT OFF THE ROADWAY AFTER THEY LANDED AT WATSONVILLE AIRPORT THIS AFTERNOON. THE COUPLE HAD FLOWN THE RENTAL PLANE FROM WATSONVILLE TO HOLLISTER AND BACK AGAIN BEFORE THE 1:50 P.M. ACCIDENT. THE PLANE, WHICH SUFFERED SOME DAMAGE, WAS TAKEN TO A HANGAR.