A Sudbury area couple on a motorbike was killed Saturday afternoon on Highway 17 near Warren.  The man and woman, both 48, were westbound when they were hit head on by an eastbound car headed that had crossed the centre line.  The 58-year-old driver of the car, who is from North Bay, received minor injuries.  The man and woman on the bike were from Val Caron.  OPP say charges are expected.