WHEN DRIVING 70 MPH ON THE INTERSTATE, THE VEHICLE PERIODICALLY YANKS HARD TO THE RIGHT, IT SOUNDS LIKE I HAVE A FLAT TIRE, FRONT RIGHT TIRE FEELS AND SOUNDS LIKE IT STOPPED TURNING. CAR SLOWS, VSC SYSTEM IDIOT LIGHTS FLASH AND BEEP. AFTER I HAVE SUCCESSFULLY THOUGH UNINTENTIONALLY RUN ANOTHER CAR OFF THE ROAD IT RETURNS TO NORMAL. THE IDIOT LIGHTS STAY ON UNTIL THE CAR IS TURNED OFF. HAS BEEN TAKEN TO MECHANICS NUMEROUS TIMES IN LAST FEW WEEKS, CANNOT FIND A PROBLEM. BUT KEEPS HAPPENING. MECHANIC IS AWARE OF 2003 AND NEWER RECALL FOR THE SAME REASON, TRIED RECALIBRATING YAW SENSOR SUCCESSFULLY. 3 DAYS LATER IT HAPPENED AGAIN MECHANICS SAYS THE SENSOR MAY BE PERIODICALLY MALFUNCTIONING, OVER CORRECTING FOR A NONEXISTENT PROBLEM. IT HAS HAPPENED GOING 30 MPH ONCE, AS WELL AS TODAY THE LIGHTS AND BEEPING WENT OFF AT A DEAD STOP IN MY DRIVEWAY. WENT STRAIGHT TO MECHANICS, TURNED OFF CAR TO GO INSIDE, NOTHING FOUND WHEN HE PULLED IT IN