Drivers of classic cars must be especially careful. Classic cars often lack what is now considered basic safety features, including seat belts, crumple zones or rollover protection. In September 2009, ABC News' "Good Morning America" and "World News" showed a U.S. Insurance Institute of Highway Safety crash test of a 2009 Chevrolet Malibu in an offset head-on collision with a 1959 Chevrolet Bel Air sedan. It dramatically demonstrated the effectiveness of modern car safety design, over 1950s X-frame design, particularly of rigid passenger safety cells and crumple zones.