Or maybe it's a Truck Monster. No one who's gotten close enough to find out has lived long enough to tell anyone.
Originally, the idea was to have the truck on the edge of a cliff, with the tentacles coming from below, not connected to the truck at all. I was never happy with the composition, so it stayed in limbo, eventually fermenting into the 180 proof monster you see here.
Watercolor, 15x21 inches. Available for purchase here.