yes sir!!
no, i meant; cooler, spare tire, camping chair, tools, spare parts, etc
and yes, generally i would have my cooler, spare tire and tools on the trail, but those would be all tied down with ratchet straps and i dont think those would be too comfy to sleep on top of
Sure, it could be situated to fit everything necessary comfortably, but i would much prefer to have compartments built into the back for that, then a flat bed on top of everything inside its proper container.