A great rock song, which is one of the type which could be with us for some time is Springsteen's, "DOWNBOUND TRAIN".
    I had a girl, I had a job, I had something going mister in this world
    I got laid off, our love went bad, times went hard
    Now I work down at the car wash where all it ever does is rain
    And I feel like a rider on a downbound train...
To me, that is Woody Guthrie in spirit and is one of the best of a genre which documents our age. A lot of rock songs don't say much, but there are plenty of good writers who may well be adding something which will last. I think "Downbound Train" is a good example. It is folk in spirit if not in sound.