In Daily v. Bone, 906 P.2d 1039 (Wyo. 1995), Bone failed to stop the snowmobile he was driving at a stop sign. Bone's failure to stop caused a collision with Daily's vehicle. Id., at 1042. Daily was not physically injured in the collision; Bone, however, was killed as a result of the impact. Id. Witnessing Bone's impact and death caused Daily posttraumatic stress disorder, depression, and agoraphobia. Id. The Court held that recovery in tort for injuries arising out of an automobile accident should not be denied simply because the plaintiff's injuries were mental rather than physical, as long as the plaintiff could prove negligence, impact, and damages proximately flowing therefrom. Id., at 1044.