I guess I’m just an old softy. I would have simply found a way to move them off to the side of the roadway and left them there. Admittedly, trying to move a couple of bi-pedal buffalo encased in a barrel of cement would require a considerable amount of heavy lifting, the satisfaction of seeing them stuck on the side of an interstate highway would be well worth it. The entertainment provided to passing motorists would brighten their day as well.
Years later, their sun bleached skeletons with arm stuck in the cement would serve it’s purpose, still.