So - driving down the motorway yesterday in the tin-top when there is a loud bang, the car bounced slightly but nothing seen before in front of us, or behind, after, the "impact". Hit the hazard warning lights and saw the car ahead, with a roof box and trailer, doing the same. Both pulled up on the hard shoulder and the other driver said he had exactly the same experience and thought something had been knocked off his car or trailer and then hit us. Nothing missing from his car and no damage whatsoever to mine. Very short clip from my dash cam linked here.
https://youtu.be/ktwepfu7jC8Road absolutely smooth, didn't feel anything through the steering, or road wheels, "impact" seemed to be on the bodywork of the car, but as can be seen from the video, nothing on the road ahead of me and nothing visible through the windscreen before the impact, impact wasn't great but was enough to trigger the video protection lock on the dash cam and to pop open the little sunglasses compartment above the rear view mirror and to move the rear view mirror slightly. Felt like something soft had hit us, but you can see the slight bounce the car made as it hit, so not a light object. Inspection at the time and since getting home showed no impact mark at all on or under the car.
Got the heart rate up for both my wife and I and enough to scare the other car's occupants too. None of the other traffic reacted to it, though I now see a couple of brake lights coming on briefly further ahead at the same moment.
Any bright ideas as to what this might have been? Sonic boom as suggested by my son? searched the news items for the area where it happened but no such boom reported. There was no sideways movement in the car, so I don't think it was wind from the large red load on a lorry going the opposite direction just as the "impact" happened.
Really strange! Any thoughts
Ken
