On Wednesday, art students at Cecil Grey Middle School in Groveland added to their growing installation of "zombies" by State Road 33, at the athletic field fence. They did their work under the supervision of art teacher John Napoles, accompanied by encouraging honks from multiple passing semis. When the installation is completed, each zombie will carry a bar code so viewers can scan the code and see how each  zombie died and ended up at Grey Middle. PHOTOS BY LINDA CHARLTON / CORRESPONDENT