To keep your hands mess free on the road, place the sandwich in a wax paper "koozie." Start with a square piece of wax paper. Fold it in half to create a triangle. Slip the sandwich in between the paper until the sandwich bottom hits the fold of the paper, and the tops of the triangle rest in the center of the sandwich. Fold the right side of the paper tightly across the sandwich, and repeat on the left side. To save the sandwich for later, wrap it tightly in clingy plastic wrap or in a large plastic baggie.