Regardless of how my work changes, I'll never be able to shake that Mr. '60s crap and it's really annoying that "Keep on Truckin'" is seen as my trademark. Imagine being branded with something you casually threw out in April of 1967, that somehow catches the popular imagination and follows you to your grave. I can see "Keep on Truckin'" engraved on my tombstone.
Robert Crumb (date of interview: 1989) Book of Changes: Interviews by Kristine McKenna
Fantagraphics, 2001; p67