Body taken while your getting gas for the truck

The company truck has three massive gas tanks so you leave it filling while you go in for a pack of smokes, some chew, a porno mag, two energy drinks and a pack of white powder sugar donuts. While your in there someone naps the body. It must have been a inside job for them to get it so fast. You don't even know its gone yet. You drive back to the lab and open the doors to unload it and nothings there. When you tell the boss he slaps you hard in the face. Then he fires you. You drive off