At first I was thinking this referenced The Grateful Dead’s song “Truckin’” … but then I did a Wikipedia search and realised it’s a pop culture reference to Robert Crumb:
https://en.wikipedia.org/wiki/Keep_on_Truckin%27_(comics)
At first I was thinking this referenced The Grateful Dead’s song “Truckin’” … but then I did a Wikipedia search and realised it’s a pop culture reference to Robert Crumb:
https://en.wikipedia.org/wiki/Keep_on_Truckin%27_(comics)