Read the comic here.
It's a bit hard to make out in the strip, but Scotch is riding a stripped down version of the walkers that Juan and the Herring Guard get around on.
This is also the first strip in a while that wasn't taken with flash photography. I recently moved things around in my LEGO workshop, and it let me set up a camera stand and light. I'm still tweaking settings, but I think the end result is much nicer - check out those great shadows on the detailing behind Juan.