In Lieberman v. Aetna Insurance Co. (1967) 249 Cal.App.2d 515, the plaintiff obtained a default judgment against the driver of an automobile that had injured the plaintiff. She then sued Aetna Insurance Company to recover the amount of that judgment. Aetna moved to set aside the driver's default on the ground of extrinsic mistake of fact. The superior court vacated the default and default judgment, and the appellate court affirmed.