oh dear...makes me quite glad we dont have any bridges around redhill lol..with the amount of little pikey shits/chavs it would probably become a local sport...
happened to me driving down the a23 past crawley, sum1 threw a breeze block on the motorway and it hit the underside of my car, cudnt get out the way in time but car in front did, luckily it had bounced a few times and broken up a bit before i hit it