My husband and cousin are driving from Pittsburgh to Los Angeles to bring my cousin out to school (we live in Los Angeles). The most direct route is Pittsburgh to St. Louis, Oklahoma City, Albuquerque, Flagstaff then Los Angeles. However, I am concerned with winter driving through Albuquerque and Flagstaff. Can anyone give any tips for alternate routes from either Oklahoma City or St. Louis? They are driving the day after Thanksgiving.