Breunig v. American Family Insurance

There is no question that Erma Yeith was subject at the time of the accident to an insane delusion which directly affected her ability to operate her car in an ordinarily prudent manner and caused the accident. The specific question considered by the jury under the negligence inquiry was whether she had such foreknowledge of her susceptibility to such a mental aberration, delusion or hallucination as to make her negligent in driving a car at all under such conditions.

At the trial Erma Yeith testified she could not remember all the circumstances of the accident and this was confirmed by her…