Motorist who was injured in collision with municipal police officer who was driving municipal police vehicle brought action against municipality and officer, and officer asserted claim against motorist. After officer's motion to sever his claim against motorist was denied, motorist moved for imposition of sanction against municipality, and officer moved to reconsider denial of motion to sever. The District Court, Lisa Margaret Smith, United States Magistrate Judge, held that: (1) municipality's bad