Head restraints in several passenger vehicles provided marginal or poor protection against neck injuries and whiplash, the insurance industry reported Thursday in new crash test results. Only 22 of 75 vehicles tested in a simulated rear crash at 20 miles per hour received the top score of good from the Virginia-based Insurance Institute for Highway Safety. Several 2007 vehicles got the lowest score of poor in the tests. Click here for the list of vehicles that received poor scores.
