While driving at highway speeds, dashboard lit up and warned that complete electrical failure was imminent. Then vehicle lost all power. Had to attempt emergency exit of the highway without any power assist of brakes or steering. The diagnosis was that rainwater failed to drain thru the sunroof drain and was routed into the trunk of the car where thousands of dollars of electronic vehicle control modules were mounted on the floor under the spare tire! this is an engineering failure that was well known to the manufacturer at the time of the incident. Manufacturer has refused to address any fault on their part. Newer bmws now have a yellow decal in the trunk warning that no liquids are to be carried in the trunk despite the fact that the trunk even includes a rack designed for Transport of groceries!! this is a serious safety hazard for all cars designed in this fashion..

- Orange, CT, USA