I don't like the idea of the open bed pickup without the mount being crated.
Taxidermist put a good bit of time into grooming that hair.
A high speed run even a short ways down the road could cost you a trip back to the Taxidermist.
Moved a lot of mounts around for a lot of years traveling to sports shows selling hunts, mount it fast and at a minimum cover it for wind protection. If you really wanna do it right, crate it up.