Chrome bars. Nothing could be more generic than the often plasticky-looking chrome bars that have popped up at the bottom of trunklids and hatches. And today, you can find virtually the same brash horizontal brightwork on everything from the Chevrolet Sonic to the Mercedes-Benz S-Class. What do such brightwork bars add to vehicles? We've heard at least one designer agree that they're garish, and say they're often late additions by stylists and product-planner types.