Blimey, how lucky was that guy!!!! I've never seen anything as bad as that, I dread to think what could have happened if the tyre/s had blown on the motorway.
Unfortunately the police will always take the easy option, which would be to nick the driver, and yes to a degree it is certainly the drivers responsibility. But I still think the dealer has a lot to answer for allowing the car onto the road with bad geo.........even more so once he has been made aware of how bad the car felt??
Keith