This is a breakthrough for Petty because for the first time the Heartbreakers (his Heartbreakers, this L.A.M.F. fan should specify) are rocking as powerfully as he's writing. But whether Petty has any need to rock out beyond the sheer doing of it--whether he has anything to say--remains shrouded in banality. Thus he establishes himself as the perfect rock and roller for those who want good--very good, because Petty really knows his stuff--rock and roll that can be forgotten as soon as the record or the concert is over, rock and roll that won't disturb your sleep, your conscience, or your precious bodily rhythms. B+