2008 TOYOTA MATRIX Suspension Problems

2008 TOYOTA MATRIX XR....CAR DRIFTS SEVERELY TO THE LEFT AT HIGHWAY SPEEDS...ESPECIALLY WHEN IN THE LEFT LANE. I REALIZE THERE IS A CROWN TO EVERY ROAD, BUT OUR OTHER VEHICLES DO NOT DO THIS ON THE SAME STRETCH OF HIGHWAY IN ANY LANES. TO GIVE AN INDICATION OF THE SEVERITY, AT 65+MPH, THE CAR WOULD BE IN THE MEDIAN WITHIN 2-3 SECONDS WITHOUT THE CONSTANT RIGHTWARD PRESSURE ON THE STEERING WHEEL. I DID NOT NOTICE THE DRIFT ON THE TEST DRIVE AT THE DEALER. FOR WHAT IT'S WORTH, THE NEW ROADWAY NEAR THE DEALER IS NEARLY PERFECTLY FLAT. ALSO, THE CAR DOES NOT SEEM TO DRIFT AS MUCH WITH TWO ADULTS IN THE CAR AS WAS THE CASE DURING THE TEST DRIVE. I NOTICED IT IMMEDIATELY UPON DRIVING THE CAR A LONGER DISTANCE ON OTHER MAJOR HIGHWAYS WITH ONLY MYSELF IN THE CAR. I NOTIFIED THE SALESMAN RIGHT AWAY. I...