NEW DYNAMIC TESTS OF SEATS & HEAD RESTRAINTS IN CARS:

"Using a new dynamic test and a dummy designed especially for rear impact testing, the Insurance Institute for Highway Safety has rated 73 seat/head restraint combinations available in 63 car models sold in the U.S. market. The ratings of good, acceptable, marginal, or poor indicate the range of occupant protection from whiplash injury in rear-end crashes at low to moderate speeds."