I have used a Chrysler Town and Country minivan in the past for deer hunting. I leave the rearmost bench seat in the garage. I take a cheap blue plastic tarp along. I lay the tarp out in the open rear compartment of the minivan and hoist the deer carcass onto this tarp. I do the same thing with my Chevrolet Suburban which has now replaced the minivan. When I am done I throw the tarp away. If you were really thrifty you might try to wash off the blood and reuse the tarp, but this seemed like a very difficult task, and I was not convinced that all the blood would come out.