My wife got hit with a wheel which had come off another car, our car needed new bonnet, wing, headlight, bumper etc etc – nearly wrote our car off. This was witnessed by police who just happened to be driving past. It turned out that the other vehicle was being road tested by a local garage, and the road test included a few miles on a motorway. Luckily the wheel didnt come off on the motorway, could have been really nasty. Police detained the driver of the other vehicle.