551 P.2d 145 C.W. HATTEN, Appellant, v. THE DEPARTMENT OF MOTOR VEHICLES, Respondent. No. 3106-1.The Court of Appeals of Washington, Division One. June 21, 1976. [1] Trial — Evidence — Duty To Preserve — Scope. The due process requirement that the State reveal evidence which is favorable to an opposing party and preserve such evidence […]