 Complete the following phrase:  A Fitch barrier consists of sand-filled plastic barrels, usually yellow-colored with a black lid. The Fitch Highway Barrier System was invented by race car driver John Fitch after the 1955 24 Hours of Le Mans race when his co-driver, Pierre Levegh, veered out of control and into the crowd. The car burst into flames and took the lives of Pierre and 84 spectators in 