Power Steering Failed problems of the 2008 Volvo C70

This vehicle was being operated at a speed in excess of 40 miles per hours on 9/12/2010 on the new jersey turnpike, on 9/13/2010 on the bruckner expressway and on 9/13/2010 on the triborough bridge. In three separate instances the power steering failed on the vehicle which veered erratically to the right to avoid on coming traffic. The panel lights on the car indicated steering failure, brake failure and low tire pressure and the car became inoperable. Fortunately traffic was avoided and there was no collision wit other vehicles. The vehicle was returned to the Volvo dealer on 9/14/2010 who confirmed that the power steering and computer system had failed on the car. After 72 hours the Volvo dealer, big dee Volvo, elmsford, NY returned the vehicle "repaired" to us after they claimed they had repaired and test driven the vehicle but could not assure us with any certainty that they knew what was wrong. This vehicle is a safety hazard to me, my children, and the public and the driving public.