Donne Kessler, 16, of Kennesaw drives a nice-looking car ?a black 2006 Acura RSX coupe. But his parents made Donne put something on the back that's not so cool: a 4-by-8-inch magnet that tells the world "Caution ? Newly Licensed." His mom, Susie Kessler, would like to see every teenager in Georgia do the same. She thinks other drivers will back off when they see the magnets ? a good idea around new drivers who are too aggressive and those too timid. Donne said he doesn't like the magnet, but it works.